News for hackers. Stuff that matters.
Re:Foursquare now gives ratings for locations, becomes Yelp ... by blake8086 on Monday November 05, 2012 @06:03PM (#4746295)
That's actually pretty easy: "People like you rated this place X".
Re:Foursquare now gives ratings for locations, becomes Yelp ... by binarysolo on Monday November 05, 2012 @08:16PM (#4746742)
Yay machine learning! Though to scale that is a nontrivial issue...

A not-quite-as-good but easier statement to make: People who like place X also like places Y, Z... etc.

Re:Foursquare now gives ratings for locations, becomes Yelp ... by eshvk on Monday November 05, 2012 @10:49PM (#4747172)
Also, sparsity of data. The fact that people are precious unique snowflakes. :)