I saw this come up on cashbackholic. Never heard of the site.
Honestly there's not a ton of info but since I have to pay cash at the hotel I wanted to book, why not? Also having problems lately with payout on my usual sites.
Currently $14/"booking". Doesn't have any more deets than that.
http://yazing.com/deals/booking.com/DawnWebster
More info:
Took a good 12+ hrs but I got an email confirmation for $14/back both bookings.
It said usually it takes 30-60 days to pay out, excepting some travel sites that take longer. They will then send money via PayPal to the email you signed up with- so make sure you use the one connected to your account!
Referral possibilities look good, but they are by each deal (ie, clicking your link to booking.com with them), not by member referrals.
I might play with this one for a bit, at least while other CB rates are low. Hopefully this works though (which would make my hostel stays in Israel ~$5/night)