Try this: HomeStars Click on "You're invited to become a Charter Member"--you earn a $20 Amazon gift certificate for writing 5 reviews of local home improvement contractors and retailers, telling 5 friends, and filling out your basic profile.
You can also try BzzAgent at BzzAgent
I joined about 3 years ago. Got some great coupons for cream cheese--just as I went dairy-free. Oops.
I've known folks who received free Senseo machines back when they were the hot new thang. I just donated mine to Goodwill because frankly, the pods suck, are expensive, and the machines (we used a Melitta and later the Senseo) leak.
And more...check out Constant Content again. I mention it because apparently, this blog is the 4th ranked term when you do a Google search for "Constant Content," and I think that's cool.