Well, after a month of trying to get my (fairly trivial) bitcoins from "survey offers" and the like from these guys, I hereby declare them to be scammers.

There is no contact information.
There is no "request payment" button.
There is nothing but your balance of bitcoins earned (painfully) through "SuperRewards."

Since SuperRewards has acknowledged and paid out to betcoin.co, I can only assume that the site will hold onto them for a while and then one day close up shop, taking all of their patsies' money with them.