I had not completed any offers before I cancelled my membership. From what I saw there, you'd need not only a disposable email address, but a disposable computer, and a disposable IDENTITY to be remotely safe there. Unless you have a really good bogus birth certificate in your back pocket, DON'T GO THERE! The questions asked in all of the offers I saw go way beyond the ';don't's'; handed out by any secure conscious advice page.
Not being paid properly or on time would be the LEAST of their members' worries!