Yes,
yes,
yes,
and yes, and there is a hardcore player base of course.
The Pd2 Team has a strict zero tolerance policy when it comes to using any other means of trading other than their in-game trading and through their trading website, so just keep that in mind.
yeah, thanks!
i'd at least need a pd2 account with a different name then

but the game is for free, right? so you only lose your account with all your chars if you get banned, right?