Often when sending an Amazon link to someone it will get trashed in the email client.

Here is the normal link:
http://www.amazon.com/Winning-Moves-5025-Rubiks-Cube/dp/B00081RYNC/ref=pd_bbs_1/103-8255214-9421430?ie=UTF8&s=toys-and-games&qid=1179622914&sr=8-1

Howard at work gave me a tip to shorten the link.

Start with http://www.amazon.com/gp/product/
Find the ASIN number for the product. It is normally on the product page, then add that to the url.

The small link to the same product is: http://www.amazon.com/gp/product/B00081RYNC

This is much less likely to get munged in email and is just nicer looking.