10K is enough for me. As of today, I quit. (March 8th 2014)
I'm unhappy with the (sometimes) exclusionary atmosphere around here, like the scornful branding of questions as "off topic" or "unclear" because they are not written in the peculiar jargon of mathematicians. With a little empathy and some broadening of perspective, it's often possible to guess what the question is about, and provide a useful answer. But, apparently, that approach is discouraged around here. Too bad. 再见.