The ShareThis iOS SDK by ShareThis is available for download to implement file sharing features into an Apple device. To access, developers need a Socialize Key separate from ShareThis because the company is still in the integration process.
Every day Foursquare users create millions of check-ins using the location-sharing platform. Those may be only a small fraction of the traffic seen by its API, which we've estimated receives at least 5 billion requests per month. The company continues to expand the local data made available via its API, so developers of all sorts are finding it a rich resource for building their apps.