About your offer, however, people will usually be more inclined to ask longer standing members of the forum to do this. The OP in the thread you linked to even mentioned so himself. You might want to wait a while or get some green trust going before offering such a service which is, even so, not in any significant demand. It's more for the benefit of the community than for the benefit of the seller that this exists, since escrow is a much more popular option.
thanks for the input. I offer my service is FREE, unlike escrow with payment.
Or can say the payment will be the service or product they offer if really works cause I got a copy of it, but we know some offer I don't need it, I just review it without pay.