Unshort unshortens short links for you, revealing the true URL. This lets you visit a page without being tracked by the URL shortening service. There are add-ons for all major browsers to automatically unshorten all shortened links; source code is available if you don't even want Unshort knowing where you're headed. Read the rest

http://feeds.boingboing.net/~r/boingboing/iBag/~3/gkhNUFy1Q-Q/link-unshortener.html