MyRebates.com

Find, buy and track rebate promotions from top manufacturers in categories such as automotive, computers, electronics, and household.
http://www.myRebates.com

Refunding Online

Devoted to the hobbies of refunding and couponing. Includes newbie tips, glossary and manufacturer directory.
http://members.tripod.com/~JWarren/RefundOnline.html

Refund Express

Refunds, coupons and trader ads, refunding articles, toll-free freebies, premium offers and test drives.
http://www.refundexpress.net

SiteForSavings

Money-saving information and opportunities on grocery products, household products and health and beauty items.
http://www.siteforsavings.com

Bondrewards

Shop at select online retail stores and earn bond dollars for every dollar you spend. Redeem for $50 U. S. savings bonds.
http://www.bondrewards.com/

Confessions of a Mail-In Rebate Junkie

How to collect on your mail-in rebates.
http://mysite.verizon.net/vze6l53f/confessionsofamailinrebatejunkie/

The Straight Dope: Why are rebate checks drawn on obscure banks in the middle of nowhere?

Answer: it's part of a scheme to delay paying rebates for as long as legally possible.
http://www.straightdope.com/classics/a3_167.html

Ed Foster's Gripelog - Rebate Bait

Explains how and why the rebate industry, especially on computers or electronic equipment, has (over)grown, and how rebate fulfullment shops make their money.
http://www.gripe2ed.com/scoop/story/2004/4/29/8438/35808

The Rebate Debate: Why Were They Late?

FTC settles charges against CompUSA for deceptive and unfair product rebate practices.
http://www.ftc.gov/opa/2005/03/compusa.htm

FTC.gov - Taking the "Bait" Out of Rebates

Advice that helps consumers successfully process and submit rebates.
http://www.ftc.gov/bcp/conline/pubs/alerts/rebatealrt.htm

SlickDeals.net Forums - Rebates

Discussion of rebate offers and companies and of consumer experiences with them, both good and bad.
http://forums.slickdeals.net/f8-rebates.html