Shortening your URLs is fundamental these days, for sharing links on Twitter without having it clog up your entire 140 character span for example. Other than a better appearance, most proper URL shortener services also offer click-tracking and some even support custom URLs.
If you’re not sure about what something like this actually does, here’s an example:
This page shortened: http://bit.ly/hJq98h
So here’s a list of these services, have a look and tell us which one you think is best in the poll below!