... are the points stuck on your account? Does that confirm that you have redeemed an official, genuine code, with no chance of it being revoked in the future?
 
"This mail is confirmation that you successfully activated Xbox Live XXXX Microsoft Points Prepaid Card on Friday, July 29, 2011." 

Yes.

Yeah, it's just a confirmation email. They don't send you anything when you actually purchase a game with them, just when you add the points.

The reason I'm asking is because someone in Vietnam is sending me codes for both XBL and PSN, and they've all worked so far. I'm just a little paranoid that something will go horribly wrong.

Well not revoked per say, but if your account gets banned you can not recover those points and they are gone forever.

Update: Well, after many different excuses, he basically told me that they are out of stock at the store he was supposedly buying the cards from, so he couldn't take a picture of a receipt or a physical card. Even though I had done three different trades with cards bought from that "shop," and nothing has gone wrong yet, I can't help be wonder why this seems so sketchy. 
 
Does anyone know anything about getting Steam keys from other countries, cheap, and then getting your Steam account banned or put in bad standing because of them? These aren't Steam keys, they're Xbox Live and PlayStation Network store codes for credit, but I'd hate to get my accounts banned for something I had no proir knowledge about. Some help would really be appreciated.  
 
To recap... : Lately, I've been trading Team Fortress 2 items for XBL and PSN points, and some Wii Shop points from people I do not know. I only trade with people that allow me to redeem the cards first, and then have me pay them the promised items after the card is successfully redeemed. I have traded for close to $300 USD in store cards. This latest guy is trading them to me at a slightly reduced (not unbelievably cheap) rate because he claims to not have a credit card and, therefore, cannot purchase Keys (which are basically currency in Team Fortress 2 trading) directly from the in-game store. This is the Vietnamese website he say he buys the cards from (you do not have to follow that link). I haven't checked the website out all that much myself because he has yet to confirm that he's actually buying the cards from there. 
 
This is pretty damn frustrating. Oh well, I guess. I've been doing this for months without any concerns, but I do not want these points to get revoked, or have my account banned, because I'm missing something obvious. I have never been scammed or tricked while making money off of this trading system, nor have I done anything illegal or dangerous. Would my best bet just be to find another supplier that doesn't seem so illegitimate?

The only way to stay worry free is to buy them yourself. What your doing now sounds iffy. Everything might be fine now but you never know. Hell, NOTHING might happen. Trust your gut, If it feels bad 99.8743632092 % of the time it is.

@Law313  said: 

Trust your gut.