URL shortening services

We sometimes need to shorten a long URL to hide affiliate link or just to make it more decent looking. tinyURL.com is the most popular URL shortenting services. As some websies blocks tinuURL we need alternates as well.
Following is a list of FREE URL shortening and URL redirect services (also known as URL forwarding service):

http://tinyurl.com/
http://notlong.com/
http://snipurl.com
http://decenturl.com
http://urlbrief.com

http://tourl.eu/
http://shrunk.us/
http://spot.bz/
http://zapurl.com
http://shorl.com/

http://www.shorturl.com/
http://www.shrinkmylink.com/
http://pinurl.com/
http://urlcover.com/
http://www.shorl.com

http://surl.se/
http://makeashorterlink.com
http://metamark.net/