These manufacturers are currently targeting Edmunds.com visitors who are browsing the Honda Accord section. Both are offering an exclusive $500 rebate. This is a bonus incentive on top of any other incentives being offered by the manufacturers.
Some of the rebates seem to be limited to certain models and regions. For example, as I was browsing around for a Honda Accord, I saw an ad for $500 off a Toyota Corolla. Our tipster was able to purchase a 2012 Toyota Camry with a similar rebate, so you may need to browse around until you see the correct ads pop up. Remember, these rebates can be used on top of any other rebate or incentive being offered.
So how do you get these rebates? You need to browse the Honda Accord pages on Edmunds.com. Look for ads from Nissan and Toyota. Some people reported special ads that pop up (make sure to turn off any pop-up blockers). When I was browsing, I saw the ads in the pages themselves.
I recommend you use the special rebate AFTER negotiating a deal through CarWoo