Short URL is an exclusive Vtiger feature that offers the URL Shortening technique. This process is accomplished by reducing and replacing a Short URL with a Web Page that has a long URL.
It shortens the length of a long conventional URL to just 30+ characters.

Example
Twitter on Vtiger Social allows you to post only 280 characters in a Tweet. If you want to add a long URL, without worrying about its length taking over the Tweet you can now easily add a short URL with reduced URL size.