Not specifically apropos of the buyout, but my experience with Angie's List has been similar to that of Yelp, that is, businesses that paid to advertise on AL were better able to maintain high rankings. The top-rated companies were not the best from either a quality or price perspective. While it's a great idea to crowd-source referrals for contractors like that, it's unfortunate that that model falls prey to the sam…
I think this is why TripAdvisor is better, in my experience, for restaurants than Yelp. If I'm not mistaken, TripAdvisor makes most of its money off of hotel booking referrals.
In cities like SF, NYC, etc, I've had much better luck with recommendations from Foursquare and Yelp. Especially with new places.