I made a little site along these lines a while back but other stuff came up and I never got around to finishing it. I've just put it up here - http://www.yamooki.com - if you want to take a look. Never got around to adding a review feature, I'll do that and hook it up with Facebook Connect when I get a spare couple of days. That (FB Connect) should make some interesting things possible, like being able to add as friends those users who have shortlisted same course as you, male/female ratios etc.