And it's really a great game too. I knew it hit the big time when Michael Arrington posted about it.<p><a href="http://www.handdrawngames.com/DesktopTD/" rel="nofollow">http://www.handdrawngames.com/DesktopTD/</a> if you want to play.
Take a novel little piece of "value" then multiply it by many tens of thousands of users and the result is success. This illustrates perfectly why some stuff that seems so technically trivial (Twitter or YouTube) can be so powerful.<p>Thankfully most organizations are totally incapable of producing simple focused products, so there's plenty of room for startups.