I don’t use URL shortners often (usually just for Twitter) but I may use them more often with Digg’s URL hack.

Whatever page you’re on let’s use http://www.thegetdownguy.com, just type digg.com/ in front of it and hit enter.

digg.com/http://thegetdownguy.com becomes http://digg.com/u163p

I like using Bitly because of the analytics, but this may be too easy to not use.