If you are sending a gift payment you have absolutely no protection at all if anything goes wrong. The second you send a gift payment, the person that receives it has no obligation to do anything else. Its now their money and you have no recourse, no matter what. So basically unless you personally know the person you are sending the payment to, already have the merchandise in-hand and just still owe the payment, or the person you are sending to has an absolutely impeccable reputation and feedback, there is no reason to take the risk of using it.
We also do not encourage members to send gift payments here. While I know we have no definite rules on this, it is wise as a buyer to make sure you know your seller. I know I personally would not send a gift payment unless they are a very long standing, reputable member.