[quote name='CheapLikeAFox']I wish people would stop posting these illegal russian key resellers[/QUOTE]
I'm afraid I'm going to have to agree. Since there is a potential for loss you might incur from this negates any real savings, people have had games revoked from their account, not sure that anyone has been banned from Steam. But this thread makes it perfectly clear Valve's stance on this.
http://forums.steampowered.com/forums/showthread.php?t=2737033
(click the staff post button, or bottom of the 2nd page, ignore the moderator, but look to BurtonJ's post from Valve, a simple NO). Although obviously he is asking if he can buy them, presumably from Steam on the Russian side of the site, I would imagine it to be not too far of a leap to draw the conclusion if they don't want you to do it on the Steam side, they wouldn't want you to circumvent it outside of Steam as well.
I'm hoping without needlessly adding rules to the site we as a community can just stop posting these, again I understand the temptation, and I don't even blame the OP, but these threads at least need a "caveat emptor" thrown in, because quite frankly it is buyer beware, and at your own risk. Also I think someone mentioned this before, but if they have a picture of the cd-key and send that to you, they could potentially use this to compromise your account, I won't really get into the semantics of how this works, but needless to say that this constitutes a "proof of purchase" albiet one from out of your region, so YMMV, and I'm not trying to spread FUD. Especially because if they have the intent of staying is business, it isn't in good practice to thieve from those who give you money already lol, so again a lesser concern but still a potential nonetheless.
I would just like people to be informed if they do so decide to take the risk. They ought to know what they are signing themselves up for. Again, no offense to the OP or anyone who uses them regularly, I just think that people need to be aware.