sea foam, does it really work??

I've heard about this sea foam product on vehicles... question is have any of you used this product and how well does it handle on the automobile... I am curious.. i want to give it a try!!!

http://www.seafoamsales.com/images/Motor-tune-logo.gif

Check out these links for previous discussions on Seafoam: http://www.automotiveforums.com/vbulletin/showthread.php?t=707136
http://www.automotiveforums.com/vbulletin/showthread.php?t=709643