For what it's worth, I used Hunch as the "decision engine" on a graduate project. While we had to use the old (very limited) API, Hunch was an incredibly useful

For what it's worth, I used Hunch as the "decision engine" on a graduate project. While we had to use the old (very limited) API, Hunch was an incredibly useful matchmaking tool. The way they can parse a profile from fbook or twitter and make accurate predictions about tastes could be incredibly powerful.