msgurl is an online service that provides short aliases to long URLs. The msgurl website has a text box to enter a long URL. For each URL entered, the server adds a new alias in its database and returns a short URL such as http://msgurl.com/url. If the URL has already been requested, msgurl will return the existing alias rather than creating a duplicate entry. The shorter URL is forwarded to the longer one. As the name of the service says you can attach a message to the URL, but it's fully optional.