Link shortening is the process of cleaning up the URL link which is long and converting it into a short URL. You can use bit.ly to do link shortening. Using bit.ly you can not only shorten the link but also track the users who are using those links. To use this service go to the http://www.bit.ly website. There in the home page you are provided with a text box. Enter your long link in the text box and submit it. Now the website converts the long URL and provides you with a short link which can be used in the place of the longer link to access the same web page. To use the tracking features of the link you need to register with the website. This tracks the users and displays the statistics of that link usage. This video shows how to do link shortening using bit.ly.