“The bulk of Wikipedia is written by 1400 obsessed freaks who do little else but contribute to the site, says a post racing up the Hacker News charts. The post pulls this number from an essay Aaron Swartz wrote more than two years ago, based on some comments by Jimmy Wales.
“Wikipedia’s growth has exploded in the past two years, so today’s number would presumably be a lot higher. But Swartz conducted his own study after hearing Jimmy’s comments, and his more detailed findings are even more interesting. …”