My brother is moving back to Las Vegas, and he's bringing his PS3 with him, and he wants me to buy a controller, so we can play call of duty and such. My questions are these. 1. Can there be different profiles (PSNIDs) on one console? 2. If so, can we play online at the same time? 3. Also, is DLC and PSN downloads locked to the console or one account? Meaning, can my brother pay for something and download it, and then I sign in and use it?