Freecache has got me thinking about whether all these url redirection services are evil or not? Most of the url shortening services are pretty useful, and can come in handy for reducing Google Juice to people who you want to link to to illustrate a point, but don't want to credit.

Of course EvilURL is the best service for this; being profane, insulting, juvenile, and frequently very funny to boot.

Notlong.com highlight some of the downsides of the various services, the lifetime, privacy and guessability implications being pretty big in my book.