More on the Google Answers closure:
This wasn’t a war, it was a massacre, and a case study in why all this “Web 2.0 stuff” actually has legs when applied properly. Google went for a direct revenue stream, a business model that made sense in 2002. Yahoo, launching much later, launched a free product and used the ideals of community participation to remove friction from the process and get out of the way of users. This incentivized use and has created a massive number of page views that Yahoo is now monetizing. The network effect kicked in big time.
And one more curious insight:
When someone’s telling you that you’re making a big mistake, while he tries to charge alot of money from you, it usually means you are making the right decision.