On the account Arrar I didn't see any posts that seemed to be breaking the rules.
I could be wrong however, since if the post/thread was deleted outside the DayZ section I wont be able to see it.
I see that you were an active seller, so it could be a possible Ban Evasion for other accounts that were banned. You might be banned for scamming.
I'm pretty sure its one of those two since I don't understand what you mean by "I Share the internet with my friends"