No I actually came across him on a LostLevels forum. He went under the name Johnny Undaunted there (as he does in several sites). That place seems dead last I checked and he hasn't been there in over a year. There, he confirmed my assumption that he is the same guy as Johnny2x4, a user on wikipedia who's hard at work in maintaining and watching articles of several video game series, like Metal Gear, Castlevania and Contra.
I wasn't able to find any contact info of him recently, so I went back and read the PM again, noticed that I forgot he mentioned being a more regular at this forum. That PM was after the beginning of 2010, so it was definitely after the move.
If I can't reach him here, I'll have to break some wikipedia rule to get to him (at his dismay, of course).
Oh, and he's been in this video game thing for a very long time and I know he hasn't given up on it anytime recently.