TJIC and David Friedman touch on the phenomenon of the social maladroit who really only blossoms within the greenhouse of their hobby. Speaking as someone who has always had a foot in the nerd camp herself and who has experienced the phenomenon from a first-person perspective, I completely... er, "grok" what they are saying.
Myself, I've been happy to turn my nerd gene to things firearm-related, but in the grand scheme of recognized social success in this society, using your knowledge of firearms to get a gig running a gun store is right up there with using the fact that you've memorized every plot twist from the X-Men to get you a job at the comic book store; neither one is likely to finance that vacation condo in Destin.
I think what Friedman's post overlooks is the old saw about the one-eyed man being king in the country of the blind. In the milieu of World of Warcraft or the local SCA joust or NerdCon '09, the person who is too timid to ask their boss for a raise is suddenly transformed into Thog the Troll or Ensign Danielle of the USS Excalibur; surrounded by like-minded people, they feel free to utilize talents which they are too socially-inhibited to use in the real world.
Hence the phenomenon of the convention organizer or chapter president or whatever who in real life does a job that demands none of that organizational skill or passion. You see it in every hobby, really, from book clubs to military reenacting to stamp collecting. In a subgroup where social status is derived from a different coin, then different people are going to be "rich", as it were, and it's unsurprising that it doesn't translate back in the real world when the wooden swords get put away or the Spock ears come off.