Psychologists say these "otaku" or geeks are regressive, have poor social ability, and have never fully matured as adults. "Therefore, they are not good at communicating with others, cannot date real human beings, and instead adore an imaginary character," said one.
Self-confessed "super otaku" Tetsuto Fujiyama says, "There are five different kinds of geeks in Akihabara. The oldest denizens are the electric appliance geeks, who come to purchase electronic parts and other equipment. Next are the PC geeks, who like to build their own original computers that run as fast as possible. Third are TV animation geeks whose brains can't distinguish between reality and the animation. The fourth group are the magazine geeks who have made original animation fantasy stories influenced from TV and game animation and publish them in small magazines circulated among themselves. The last group are those geeks who love to play video games in which erotic animation is used."
"They are not ImeCla girls (Image Clubs in which you can act out your fantasy in a situational setting as nurse-patient, teacher-student, commuters in packed train and so on). Nor is it a a 'no-pan' cafe (where mini-skirted waitresses with no panties serve customers). These shops at Akihabara are not in the sex business because for geeks, fantasizing is much more important than actually doing anything with girls."
(via bOING bOING)