At South By Southwest Interactive in Austin Texas, in March 2009 I ran into Julia Kaganskiy, the social media and community manager for Unigo.com.
If you haven't heard of Unigo, you will. It's a crowdsourced college guide that offers honest appraisals of life at hundreds of U.S. colleges, including the ability to find out what it's like to major in a particular subject on a college campus.
Julia says putting an editorial filter on crowdsourced content "sets it apart" and increases the signal level, and I think a lot of sites are finding the same thing.
You'll notice that my fill light starts to flake out toward the end of our conversation.