An utility called "tinyurl" makes your life easier with shorter URL without creating an all new website. Many times it become cumbersome(i.e. for a long string) and unsafe(if you miss to copy contents of the link) to send a link to your friend.
TinyURl helps you with providing an alias for a long link. Concept is very simple but effective.
e.g. a link is: "http://http://www.blogger.com/post-create.g?blogID=4233584295994918105"
You may get an easier name for this link as: http://tinyurl.com/abc
Here is more information this: