5 links
An Introduction to Rubber Stamping
tealdragon.net
Describes how to make greeting cards using different stamping and mounting techniques.
Stamp My Card
stampmycard.com
Contains ideas for using rubber stamps and instructions on how to complete a variety of projects.
The Imagination Factory: Stamp It
kid-at-art.com
Ideas for making a variety of items using printing techniques and recycled paper.
Wikipedia: Rubber Stamp
en.wikipedia.org
A short account of the materials and techniques used to produce different types of prints.