An algorithm to suggest similar maps

[SevaOnOss]

Currently it's very hard to find similar maps if you play a map you like. A simple algorithm like shopping sites' "People also bought this" would be very nice to see. Just look at what common maps are played in the same session between the people that also played the map you're looking at. I think the current API would be capable of doing this, and I don't think it would be that computationally expensive to do at all. And then just put a tab somewhere on the map listing with recommended maps based on the algorithm.
I think this would enhance the gameplay experience greatly, since I can just take the map I enjoyed playing and see similar maps that I'd also enjoy.