Wikipedia editors can also come across as jerks. A lot of new members get turned off and end up leaving the community... this happens even more often with female editors.
On the other hand, at some point both communities struggle with being inclusive and welcoming.
Maybe Joel is right though, and the two goals are mutually exclusive? I personally hope that they're not, but don't have any examples to point to that are successful on the level of Wikipedia or StackOverflow.
On the one hand, it's wonderful that both SO and Wikipedia are "well-kept gardens": http://lesswrong.com/lw/c1/wellkept_gardens_die_by_pacifism/
On the other hand, at some point both communities struggle with being inclusive and welcoming.
Maybe Joel is right though, and the two goals are mutually exclusive? I personally hope that they're not, but don't have any examples to point to that are successful on the level of Wikipedia or StackOverflow.