Foursquare's response: http://blog.foursquare.com/post/990202740/changes-to-our-authentication-system http://blog.foursquare.com/post/990202740/changes-to-our-a

Foursquare's response: http://blog.foursquare.com/post/990202740/changes-to-our-authentication-system http://blog.foursquare.com/post/990202740/changes-to-our-aut... tl;dr version: Implementing HTTPS, should be live in "coming weeks'.