Julie188 writes: According to T-shirt selection of attendees at open source events, the majority of open source developers are really big to the point of being overweight. Granted, this isn't a true reflection of all open source developers. And this doesn't mean that open source causes weight gain. (I hear it's actually a low calorie snack). But T-shirt preference does seem to validate the stereotype of the open source developer as a guy in his 30’s, long beard and rotund.