Providers, such as TinyURL.com or bit.ly offer the user the opportunity of shortening long URLs.
There are many reasons why you may want to shorten a URL. For one, URL may consist of a very combination of numbers and letter, and secondly, Twitter limits the maximum message length to 140 symbols. Some URL shorteners offer additional features, such as tracking or real time analysis. According to Matt Cutts, the person responsible for web-based spam at Google, shortened URLs have no negative effect on SEO.