Great, just great people! A few bad apples always spoil it for the bunch. Now those of us who's actually looking for a decent casino has to suffer.
Coinbet, I don't blame you should you decide to cancel the vouchers. But before you do, consider that you're still ironing out kinks and no one will deposit until users confirm everything is working as it should. I can attest that as of the whee early hours this morning they weren't. Perhaps you should just create one time use vouchers. Or better yet... Cancel the vouchers and credit accounts directly. Have the users post their username here. From there, just look at their forum post count. You'll be able to determine new accounts.
Doesn't that sound like a better solution?