It isn't, but the "PMing method" is ONLY for a verification that guy with X MSN owns Y account name on Sythe. Not for a communication or doin' a deal, because PM screenshots are NOT counted as "proofs" on RaSC section (if you scam or the buyer scam).
ONLY MSN from active chat window screenshots are counted. That's why me and all Sythe Staff recommend to USE MSN (new name: WLM). It's better and proofs ARE counted.
Btw, you already have 5 Threads in this subforum when you're allowed to have ONLY 1 thread per person, otherwise it's against the rules:
...Only one thread per user. If you are selling more than one account, then state both accounts in the same thread. Failure to comply with this will result in your thread deleted. If you keep making more threads, you'll get punished.