Looking for Spock here? Live long and prosper, my friends.
Usability / Human Factors Engineering / User Interface Design
The StackExchange sites seem like a great place to share knowledge and learn new things.
Due to the rude, inappropriate, and mean-spirited moderating of the Superuser StackExchange site (a sentiment apparently shared by many people), I regret that I will be limiting my contributions there. I do not share those values. Hopefully things will improve, but based on recent behavior by some of the moderators on Superuser, I find it unlikely.
The other StackExchange sites seem to attract much better quality and more friendly moderators, and thus have healthier communities.