There's a few reasons, but all in all you will be judged and perceived elsewhere in the community based on your actions and behavior inside and outside of it. This extends to the servers too. Let's say a player was banned for racism on SSRP, comes on TS3 to continue to harass the staff member and others, obviously he's exhibiting the same behavior he did on SSRP and that is being taken into account on the banning of the user on teamspeak too. If you were being rude to staff members in game, then took that to the forums after being chat muted, obviously they're interconnected in a similar way the TS3 and SSRP, or any other servers could be.