This unofficial library in Ruby language supports the Foursquare Merchant API. It aims to facilitate new campaigns, specials, and venues. Instructions to use Ruby as a gem available as two single lines of code to choose from. Quickstart includes campaigns, specials, and venues. Created by Tim Olshansky.
If you're looking for a traffic data web service, you probably have not been able to find one for free. Now mapping pioneer MapQuest is beta testing a service it says provides "real time traffic information related to incidents, markets and flow."
Social movie review web site FilmCrave recently released a new API (our FilmCrave API Profile) that provides developers with access to various types of content, including member movie reviews, movie plots, and movie ratings. Originally developed as an API for use by one of its business partners, FilmCrave decided to make the API publicly available in order to encourage third parties to integrate FilmCrave's content with other web sites.
Facebook recently introduced Graph API V3.2, which includes updates to Instagram Graph API, Page Insights, Pages and Video Polls, and Marketing API. The company also announced updates to Facebook Login and the Messenger App.