I expect the most common age span around 21-35ish, tech savvy, not limited by any profession at all, and the website focuses around lifestyle/hobby, so there is no specific business activity to tie it to. Govt agency - must be bored at work during mid-day I guess :) I've just started gathering subscribes, so I got some time to research the habits. I'm trying to analyze activity on discussion groups, maybe that will give me some hints.