Buy online and get automatic cash rebates

There's a new competitor for online rebate sites eBates.com and Cashbaq.com. The newcomer is called Extrabux.com and the site is similar to its better known rivals. You register with them, click through to retailers from their site, and earn automatic rebates from 1% to 30% on your purchases.

I compared five retailers to see who had the best rebates. Extrabux.com and Cashbaq.com both came out ahead twice and for one store all three had the same rate. Here's how it broke down:

--- Extrabux --- Cashbaq --- eBates
iTunes --- 4% --- N/A --- 3%
Macy's --- 3% --- 5% --- 4%
Magazines.com --- 30% --- 20% --- 26%
Best Buy --- 1% --- 1% --- 1%
Staples --- 1% --- 2% --- 1%

eBates has the best sign-up deal, offering a $10 gift card at one of three or four stores or $5 in cash, which they send you once you make a purchase through them. Cashbaq.com offers $5 for joining and like eBates, they send it to you after you make a purchase through them. Extrabux.com does not seem to offer any bonus for signing up.

It is also unclear how long Extrabux.com takes to send you your rebate. The site says "these earnings will be deposited into your account (become available) once the return time on the purchased item has passed." So if the store has a 90 day return policy you have to wait three months? What about if it is a store like REI, that basically takes items indefinitely?

I'm going to contact them and let you know what I find out.