Yes, you read that title correctly. WhereTheLadies.At is, indeed, a thing that exists. Before you get start joking around, let's be honest. Checking in all the time on Foursquare has earned you nothing but Mayorships and a free slice of pizza every once in a while. Well, that's about to change.
Popular social check-in service Foursquare is going through some changes, and the most important of those is that the old v1 API is going dead, as we've known since March. Older apps, especially abandoned ones, will stop working then, as will any newer app that hasn't yet upgraded to the new API.