It is easy to use and more short rather than tinyurl
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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+).
Bit.ly seems to be shooting up like a rocket, while TinyURL may have plateaued. Why is bit.ly growing so much faster? One big reason is because it creates even shorter URLs than TinyURL does by about five characters (http://bit.ly/ versus http://tinyurl.com/). Don’t laugh. Every character counts. Bit.ly also offers better analytics and tracking tools on the backend.