Another in an endless series of posts; as I'm reengaging with the developer world I'm starting to find more and more great software.
I've been Twittering a fair bit (both in the literal and figurative senses, you can follow me here) and needed to find a good URL shortening service (as Twitter posts are limited to 140 characters) and have been using the Twhirl client to do this. Twhirl includes some URL Shortening functionality within the client and by virtue of being the shortest and fastest to respond my favorite is is.gd.