# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2010-01-16 23:07:03 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/7842629835) Yelp Enables Check-Ins On Its iPhone App; Foursquare, Gowalla Ousted As Mayors http://bit.ly/6iEqn6