As part of my continuing effort to take over the world, I’ve created my own personal url-shortening service: http://uvurl.net.

Just for the record, mine is NOT implemented as Jeff Atwood describes in URL Shortening: Hashes In Practice.  It’s actually much easier than creating an “aggressive hash.”  Each URL is assigned a sequential numeric identifier, which is converted into base-36 with one PHP function.  (Why PHP has a function for converting number bases is beyond me, but there it was.)  Voila.