Prox chat also fulfils a major social aspect of any game. Take planetside 2. Without Prox chat that game would have been so boring. You had your screamers, spammers, music players, casual conversations, pissed off guy, troll guy, the solicitor, the leader, the drunk guy, and many more. I mainly lurked but some of the most humorous moments I have had had been of me eavesdropping on conversations.