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	<title>Comments on: Facebook viral marketing: When and why do apps &#8220;jump the shark?&#8221;</title>
	<atom:link href="http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/feed/" rel="self" type="application/rss+xml" />
	<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/</link>
	<description>Essays on viral marketing, freemium, and social gaming</description>
	<lastBuildDate>Sun, 07 Mar 2010 15:07:14 -0700</lastBuildDate>
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		<title>By: facebook viral apps</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-2455</link>
		<dc:creator>facebook viral apps</dc:creator>
		<pubDate>Tue, 01 Dec 2009 07:14:22 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-2455</guid>
		<description>Nice post, It’s incredible to see how quickly this is all happening.&lt;br&gt;Because Facebook is all about friends, I think the apps that deliver true value to friendship networks (like the carpool and couchswap apps) are the ones to watch.</description>
		<content:encoded><![CDATA[<p>Nice post, It’s incredible to see how quickly this is all happening.<br />Because Facebook is all about friends, I think the apps that deliver true value to friendship networks (like the carpool and couchswap apps) are the ones to watch.</p>
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		<title>By: What I&#8217;m reading: Viral Loop by Adam Penenberg &#124; Andrew Chen (@andrew_chen)</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-2349</link>
		<dc:creator>What I&#8217;m reading: Viral Loop by Adam Penenberg &#124; Andrew Chen (@andrew_chen)</dc:creator>
		<pubDate>Sat, 07 Nov 2009 22:58:11 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-2349</guid>
		<description>[...] Hitting saturation in viral networks Another important limitation is that there&#8217;s a finite number of users out there, and after you churn through all of them, all you have to look forward to is the long plateau. I first wrote about this in my post Facebook Viral Marketing: When and why do apps &#8220;jump the shark.&#8221; [...]</description>
		<content:encoded><![CDATA[<p>[...] Hitting saturation in viral networks Another important limitation is that there&#8217;s a finite number of users out there, and after you churn through all of them, all you have to look forward to is the long plateau. I first wrote about this in my post Facebook Viral Marketing: When and why do apps &#8220;jump the shark.&#8221; [...]</p>
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		<title>By: To my first 10,000 blog subscribers: Thank you! &#124; Andrew Chen (@andrew_chen)</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-2023</link>
		<dc:creator>To my first 10,000 blog subscribers: Thank you! &#124; Andrew Chen (@andrew_chen)</dc:creator>
		<pubDate>Wed, 19 Aug 2009 20:54:34 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-2023</guid>
		<description>[...] Facebook viral marketing: When and why do apps “jump the shark?” [...]</description>
		<content:encoded><![CDATA[<p>[...] Facebook viral marketing: When and why do apps “jump the shark?” [...]</p>
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		<title>By: FP NICOLAS</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-1765</link>
		<dc:creator>FP NICOLAS</dc:creator>
		<pubDate>Thu, 14 May 2009 00:44:55 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-1765</guid>
		<description>Great article, thanks !</description>
		<content:encoded><![CDATA[<p>Great article, thanks !</p>
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		<title>By: gargouri2001</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-1030</link>
		<dc:creator>gargouri2001</dc:creator>
		<pubDate>Tue, 14 Oct 2008 14:48:55 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-1030</guid>
		<description>Nice write up and blog , Thanks for sharing all those good info&lt;br&gt;&lt;br&gt;best regards&lt;br&gt;John&lt;br&gt;&lt;a href=&quot;http://thenewsempire.com/Technologies/&quot;&gt;http://thenewsempire.com/Technologies/&lt;/a&gt;</description>
		<content:encoded><![CDATA[<p>Nice write up and blog , Thanks for sharing all those good info</p>
<p>best regards<br />John<br /><a href="http://thenewsempire.com/Technologies/">http://thenewsempire.com/Technologies/</a></p>
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		<title>By: How to measure if users love your product using cohorts and revisit rates &#124; Futuristic Play by @Andrew_Chen</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-939</link>
		<dc:creator>How to measure if users love your product using cohorts and revisit rates &#124; Futuristic Play by @Andrew_Chen</dc:creator>
		<pubDate>Mon, 08 Sep 2008 15:00:56 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-939</guid>
		<description>[...] results - in particular, without the proper mechanics in place, it&#8217;s easy to hit the &#8220;shark fin&#8221; user curve, as well as the death spiral caused by reverse Metcalfe&#8217;s Law. In both cases, once the core [...]</description>
		<content:encoded><![CDATA[<p>[...] results &#8211; in particular, without the proper mechanics in place, it&#8217;s easy to hit the &#8220;shark fin&#8221; user curve, as well as the death spiral caused by reverse Metcalfe&#8217;s Law. In both cases, once the core [...]</p>
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		<title>By: Kati</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-344</link>
		<dc:creator>Kati</dc:creator>
		<pubDate>Sat, 02 Aug 2008 17:06:44 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-344</guid>
		<description>&lt;p&gt;Hi Andrew!&lt;/p&gt;

&lt;p&gt;I played a bit with your excel-sheet and your equation and explored that your results in excel doesn&#039;t match with your posted equations. You never used something like ^t.&lt;br /&gt;
In excel you use something like&lt;br /&gt;
u(t)=u(t-1)*((1-u(t-1)/carring_capacity)*conv*i)+u(t-1)&lt;/p&gt;

&lt;p&gt;Where is the mistake?&lt;/p&gt;
</description>
		<content:encoded><![CDATA[<p>Hi Andrew!</p>
<p>I played a bit with your excel-sheet and your equation and explored that your results in excel doesn&#8217;t match with your posted equations. You never used something like ^t.<br />
In excel you use something like<br />
u(t)=u(t-1)*((1-u(t-1)/carring_capacity)*conv*i)+u(t-1)</p>
<p>Where is the mistake?</p>
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		<title>By: Juan</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-343</link>
		<dc:creator>Juan</dc:creator>
		<pubDate>Fri, 11 Jul 2008 19:48:30 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-343</guid>
		<description>&lt;p&gt;Hey, i just found out about this theory on Google I/O. I will defintlly look for more of syour developments. I have made a post about organic growth vs viral growth on my blog. Is acctualy in spanish, so you might find it interesting:)&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.lawebdejuan.com.ar/2008/07/crecimiento-viral-vs-crecimiento.html&quot; rel=&quot;nofollow&quot;&gt;http://www.lawebdejuan.com.ar/2008/07/crecimiento-viral-vs-crecimiento.html&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Awesome work!&lt;br /&gt;
&lt;/p&gt;
</description>
		<content:encoded><![CDATA[<p>Hey, i just found out about this theory on Google I/O. I will defintlly look for more of syour developments. I have made a post about organic growth vs viral growth on my blog. Is acctualy in spanish, so you might find it interesting:)</p>
<p><a href="http://www.lawebdejuan.com.ar/2008/07/crecimiento-viral-vs-crecimiento.html" rel="nofollow">http://www.lawebdejuan.com.ar/2008/07/crecimiento-viral-vs-crecimiento.html</a></p>
<p>Awesome work!</p>
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		<title>By: Nick Jag - Facebook Marketer</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-342</link>
		<dc:creator>Nick Jag - Facebook Marketer</dc:creator>
		<pubDate>Thu, 10 Jul 2008 05:01:26 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-342</guid>
		<description>&lt;p&gt;Definitely agree with you Andrew, retention is really important when developing a new Facebook app, or any app for that matter. Great math, great stats, and great post.&lt;/p&gt;
</description>
		<content:encoded><![CDATA[<p>Definitely agree with you Andrew, retention is really important when developing a new Facebook app, or any app for that matter. Great math, great stats, and great post.</p>
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		<title>By: Joshua March</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-341</link>
		<dc:creator>Joshua March</dc:creator>
		<pubDate>Mon, 23 Jun 2008 18:43:46 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-341</guid>
		<description>&lt;p&gt;Hi Andrew,&lt;/p&gt;

&lt;p&gt;I did a talk a while back on your findings to the Facebook Developer Garage in London, which I help organise. After posting about my talk ended having an discussion with a reader over some inputs which create a saw-tooth in the results, you might find the conversation interesting - &lt;a href=&quot;http://www.joshuamarch.co.uk/2008/04/jumping-shark.html&quot; rel=&quot;nofollow&quot;&gt;http://www.joshuamarch.co.uk/2008/04/jumping-shark.html&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Cheers,&lt;/p&gt;

&lt;p&gt;Josh&lt;/p&gt;
</description>
		<content:encoded><![CDATA[<p>Hi Andrew,</p>
<p>I did a talk a while back on your findings to the Facebook Developer Garage in London, which I help organise. After posting about my talk ended having an discussion with a reader over some inputs which create a saw-tooth in the results, you might find the conversation interesting &#8211; <a href="http://www.joshuamarch.co.uk/2008/04/jumping-shark.html" rel="nofollow">http://www.joshuamarch.co.uk/2008/04/jumping-shark.html</a></p>
<p>Cheers,</p>
<p>Josh</p>
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		<title>By: Sean Murphy</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-340</link>
		<dc:creator>Sean Murphy</dc:creator>
		<pubDate>Mon, 19 May 2008 05:24:22 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-340</guid>
		<description>&lt;p&gt;Great post, one thing that struck me is that it doesn&#039;t capture the &quot;competitive equilibria&quot; issues that may also occur. Your social network isn&#039;t the only  one recruiting, so that there is competition for the total carrying capacity. I think there may also be a bandwagon effect, where users depart smaller groups (in the context of a particular demographic/market/segment that you measure with your carrying capacity) for larger ones because they offer more benefits. But I agree with your basic modeling approach.&lt;/p&gt;
</description>
		<content:encoded><![CDATA[<p>Great post, one thing that struck me is that it doesn&#8217;t capture the &#8220;competitive equilibria&#8221; issues that may also occur. Your social network isn&#8217;t the only  one recruiting, so that there is competition for the total carrying capacity. I think there may also be a bandwagon effect, where users depart smaller groups (in the context of a particular demographic/market/segment that you measure with your carrying capacity) for larger ones because they offer more benefits. But I agree with your basic modeling approach.</p>
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		<title>By: NevaehEastkbff</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-339</link>
		<dc:creator>NevaehEastkbff</dc:creator>
		<pubDate>Mon, 05 May 2008 13:17:22 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-339</guid>
		<description>&lt;p&gt;This is good methad and good story.&lt;/p&gt;

&lt;p&gt;&lt;br /&gt;
NevaehEastkbff&lt;/p&gt;

&lt;p&gt;----------------&lt;/p&gt;

&lt;p&gt;Wow, check out this site called &lt;a href=&quot;http://www.fluc.com&quot; rel=&quot;nofollow&quot;&gt;http://www.fluc.com&lt;/a&gt;&lt;br /&gt;
. Free SMS and free mobile ads!! Its fantastic&lt;/p&gt;
</description>
		<content:encoded><![CDATA[<p>This is good methad and good story.</p>
<p>
NevaehEastkbff</p>
<p>&#8212;&#8212;&#8212;&#8212;&#8212;-</p>
<p>Wow, check out this site called <a href="http://www.fluc.com" rel="nofollow">http://www.fluc.com</a><br />
. Free SMS and free mobile ads!! Its fantastic</p>
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		<title>By: desmondhaynes</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-338</link>
		<dc:creator>desmondhaynes</dc:creator>
		<pubDate>Wed, 09 Apr 2008 10:43:51 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-338</guid>
		<description>&lt;p&gt;I didn&#039;t understand some of the maths bit - but understand the implications loud and clear. Thanks for the post!&lt;br /&gt;
-DH&lt;br /&gt;
Visit my tech blog @ &lt;a href=&quot;http://techrunch.blogspot.com/&quot; rel=&quot;nofollow&quot;&gt;http://techrunch.blogspot.com/&lt;/a&gt;&lt;/p&gt;
</description>
		<content:encoded><![CDATA[<p>I didn&#8217;t understand some of the maths bit &#8211; but understand the implications loud and clear. Thanks for the post!<br />
-DH<br />
Visit my tech blog @ <a href="http://techrunch.blogspot.com/" rel="nofollow">http://techrunch.blogspot.com/</a></p>
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		<title>By: Neil @ FacebookInsight.com</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-337</link>
		<dc:creator>Neil @ FacebookInsight.com</dc:creator>
		<pubDate>Tue, 18 Mar 2008 00:02:14 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-337</guid>
		<description>&lt;p&gt;Great post.&lt;/p&gt;

&lt;p&gt;Clearly you&#039;ve mapped the short lifecycle of most Facebook applications at this point.  This kind of theory would hold for any sort of engaging application online.  The anomalies do exist though, like Top Friends or Compare People, where constant innovation keeps users coming back for more.  I imagine this is what we&#039;ll see after Facebook shakes down existing applications with the new Profile setup.&lt;/p&gt;
</description>
		<content:encoded><![CDATA[<p>Great post.</p>
<p>Clearly you&#8217;ve mapped the short lifecycle of most Facebook applications at this point.  This kind of theory would hold for any sort of engaging application online.  The anomalies do exist though, like Top Friends or Compare People, where constant innovation keeps users coming back for more.  I imagine this is what we&#8217;ll see after Facebook shakes down existing applications with the new Profile setup.</p>
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		<title>By: Adam Durfee</title>
		<link>http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/comment-page-1/#comment-336</link>
		<dc:creator>Adam Durfee</dc:creator>
		<pubDate>Mon, 10 Mar 2008 21:08:18 +0000</pubDate>
		<guid isPermaLink="false">http://andrewchenblog.com/2008/03/05/facebook-viral-marketing-when-and-why-do-apps-jump-the-shark/#comment-336</guid>
		<description>&lt;p&gt;Any particular reason why you took this approach instead of applying the Bass model to this?  &lt;a href=&quot;http://en.wikipedia.org/wiki/Bass_diffusion_model&quot; rel=&quot;nofollow&quot;&gt;http://en.wikipedia.org/wiki/Bass_diffusion_model&lt;/a&gt;&lt;/p&gt;
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		<content:encoded><![CDATA[<p>Any particular reason why you took this approach instead of applying the Bass model to this?  <a href="http://en.wikipedia.org/wiki/Bass_diffusion_model" rel="nofollow">http://en.wikipedia.org/wiki/Bass_diffusion_model</a></p>
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