I'll just give the only IDs that matter:
Steam: TheBraveSirRobin
My profile should be public so you can use this link to it if you are not sure who to look for
League of Legends (NA servers): SirNameless
While I do have an Xbox LIVE gamertag, I am a PC player, through and through. I've already listed these IDs quite a few times on this forum but it never hurts to put them out there. I like to play with other people in most multiplayer games, although I prefer to play with people that are comfortable using VOIP. Also if I for some reason don't accept a request you can send me a PM through WrongPlanet.
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Nosce te ipsum - Know thyself