I just commented the other day to someone that Tinder should analyze the features of those you swipe yes, and build a profile based on your history to auto-swipe in the future. Machine learning at its finest.
We're actually in process of hacking that one too based on your Facebook stated preference :)
I'm talking about using OpenCV on profile pics of those you swipe yes on. :)
It sounds like a neat problem to work on. I imagine a few awkward situations where the algo has "slightly" miscalculated though.