The persons who have lied should be sanctioned, blocking his accounts "fake" and his principal account , and the respective loss of benefit in the above mentioned accounts.
A few terms should be added to agree in the register, included that the deception is a motive of definitive expulsion of the page and loss of the existing quantity in the account.
Other ways of check can be implanted, for example registering the mobile, the person who wants to be deceptive will need a mobile for account and though he will not avoid the deception it can diminish it.
It might allow the only account for IP, if some person uses two accounts in the same IP it will have to ask for permission to the staff and to check to the users extra that to use happiness IP, of the way that the staff indicates them.
Also the check for ID card as it is done in the pages of exchange of coins or virtual portfolios, let's not forget that here we are working with money and in any occasions of a considerable value.
I hate the liars.
Regards.