http://andrewchen.disqus.com/Analysis on viral marketing, user experience, game design, and online advertisingenTue, 27 Jul 2010 13:29:08 -0000http://andrewchen.typepad.com/andrew_chens_blog/2008/07/online-advertising-during-a-recession-5-key-trends-for-ad-based-startups.html#comment-64675731<p>very informative post to read.</p>hostingTue, 27 Jul 2010 13:29:08 -0000