Below are some excellent sites for Rubber Stamp enthusiasts...

Check them out!

Papertrace Ltd
Sizzix Die Cutting
Stamporium
The UK Craft Directory

New to rubber stamping? Check out this link for some excellent advice.
An introduction to rubber stamping.
Favourite links to rubber stamping.
Card Inspirations
Handcrafters Village
Rubber Stamp.com
Impress Cards
The Stamp Connection
The Stampman
Art Stamp UK