Open-source developers may not be the pinkos you thought they were, but they are just as overwhelming male — about 97.8 percent— as you assumed. Somebody should tell Leah Culver that the odds are even better at a SourceForge LAN party than they are on Kevin Rose's 94-percent-male Digg. (Photo by wickenden)

Open-source developers are motivated by personal development and building their reputation, according to Psychology Today. Which of course means that they're a self-serving, greedy bunch — just like the rest of us. If such self-interest leads to new software like the Firefox brower I'm using right now, good for us. And if fame-seeking keeps open-source developers from getting screwed over like Wikipedia users — who, according to Psychology Today, edit Jimmy Wales's comprehensive list of English soccer stars for more altruistic purposes — well, good for him. (Photo by jagelado)