Bit.ly
bit.ly allows users to shorten, share, and track links (URLs). Reducing the URL length makes sharing easier. bit.ly can be accessed through our website, bookmarklets and a robust and open API. bit.ly is also integrated into several popular third-party tools such as Tweetdeck. A more full list of third party tools can be found on the bit.ly blog. Unique user-level and aggregate links are created, allowing users to view complete, real-time traffic and referrer data, as well as location and metadata. Tracking stats are available after users shorten their long links with bit.ly by clicking on the Info+ link on bit.ly, or just adding a + sign to the end of any bit.ly link - for example, http://bit.ly/n0og+
Tool Reviews
Bit.ly is blazing fast, the analytics are insanely useful, it integrates with just about every third party app out there, and custom urls are the bomb.
This is my default URL shortener because most of application I've used already support bit.ly API
Love this service - definitely nervous about libya taking the url away though.
This tool is great. It's tied right into Tweetdeck for me so I'm automatically generating bitly links. Then, with minimal effort I can go to their site and get all the link clicking data...awesome!
Bit.ly, I love ya man, but what's up with that logo? Seriously though, bit.ly rocks. Their custom URL service for businesses (that's how oneforty generates the "14t.me" links) is beyond awesome.

