http://www.freeafterrebate.info/
It looks to keep up on products that I can get for free after rebate, as well as notes about shipping and handling for the items. It turns out that the USB wireless adapter that I got at www.pcmall.com is also at www.ecost.com, but the S&H turns out to be cheaper. Now, I couples the pcmall one with the other free thing, so the S&H evened out. Got to keep an eye on that, though.
And, they have an RSS feed. AWESOME! Loading it up in IE, though, doesn't show anything. I'll put it in Sharpreader when I get home.