I don't agree with this article. Just because a lot of time is spent working on "non-interesting" problems, technologically speaking, like Facebook and Zynga,

I don't agree with this article. Just because a lot of time is spent working on "non-interesting" problems, technologically speaking, like Facebook and Zynga, doesn't mean that there aren't plenty of startups who are working in more technologically-impressive fields (). The entire article is completely anecdotal. To make things worse, it explains how Groupon's only tech innovation is "cute email". But I don't understand why people call Groupon a (technology) startup. It's just a company. A fast growing one, sure, and that relies on some technology (like every other company in the world). But it's not a tech company at all. I'm not saying that Facebook isn't impressive, technologically. I think Facebook has a lot of things to offer, e.g. scaling, building the world's largest real-time chat system, impressive amounts of work into user interfaces, and, as the article mentions, impressive amounts of work into analyzing user behavior.