I have offered my resignation as a moderator to the SE team and I think it's important that I provide some explanation here. Principally, I decided over the past weekend to pull the advertising for math.SE from a local professional newsletter because I was no longer comfortable recommending the site to my professional friends and colleagues, and given that state, I don't think it's appropriate for me to be a moderator.
For a little more than a month, nearly every visit to math.SE and meta.math.SE has left me feeling ill. From the moderator's view, there is a constant stream of nasty comments on the main site and frequent attacks on us and between users on the meta site. A small number of very loud users have a tendency to make overly-broad assertions about the moderators and draw conclusions from them (e.g. that we are not math people, that we are 20-somethings, that we don't know what USENET was like) and/or to assert that they have more experience than we do without any proof behind that assertion. It has been similarly asserted that the experience of MathOverflow trumps the much longer and much larger experience of StackOverflow, SuperUser and ServerFault.
From my personal perspective, there is a fundamental misunderstanding that is generating a lot of the ugliness on meta. A small number of very loud users seem to think that the goal of math.SE is to create the perfect math Q&A site and so they persist in demanding changes to the SE model, under the premise that math people are somehow different from normal people or programming people or other people. My understanding—as in, when I saw this site proposed on area51 and first joined, before I was a moderator—is that the goal of math.SE is to create a StackExchange Q&A site for math questions. By this, I mean that it is a fundamental part of the site that it has the same model and rules and behaviors as the other SE sites.
It has been suggested more than once that it is more important to retain users who have contributed a lot to this site than to ensure that those users behave appropriately; perhaps this should be taken as an indication that failing to ensure appropriate behavior from users will serve to drive away users who contribute a lot to this site.
I hope that once I no longer see math.SE from the perspective of a moderator, I will want to contribute again and perhaps even recommend the site to my friends and colleagues.