After much anticipation since its private beta release in March, Yahoo! has made Fire Eagle publicly available. Fire Eagle is an open geo-location platform that allows users to broadcast their geographic location to the Web while at the same time giving the the ability to easily control how and on which sites location data is shared (our Fire Eagle API profile).
Swipebuster is using the private Tinder API to obtain Tinder user data. Swipebuster can find out if a specific person is using Tinder and can provide the most recent date that person used the Tinder app. Other companies that have had private APIs reverse engineered include Uber, SnapChat, and Tesla.