This how-to is a walkthrough on implementing the Ruby wrapper for the Bit.ly API. Written by Nasir Jamal, the tutorial gives step by step instructions on installation, authorizing client classes, how to shorten URLs, and more, all using "url_shortener," a Bit.ly Ruby gem that is open source on GitHub.
Microsoft has announced its new Facebook SDK, which allows developers using Microsoft technologies to quickly create web client (via Silverlight), web server (via ASP.NET) and desktop (via WinForms and WPF) applications that harness the power of the Facebook API.
Are you ready to let everyone know the expert you are? Start by answering questions on Twitter using Replyz, a new service built on top of the Twitter API. It looks for common question phrases and extracts those tweets to its site. That way, the question can go beyond someone's Twitter followers.