You asked, so here you go:
Politics, like religion, abortion rights, and the reintroduction of the Gray Wolf, is not a subject that should be discussed on internet discussion forums. It tends to bring out the absolute worst of even the best people, and diminishes the quality and value of the site as a whole.
Moreover, it does drive people off. People like me, who simply choose not to partake in or be exposed to the vitriol and willful ignorance displayed in such discussions. It is (among other reasons) one of the reasons I dropped off Garagejournal.com almost a year ago. It seemed that regardless of Ryan's intolerance for political discussion of any sort, some members insisted on inserting insidious barbs into the most innocuous of threads.
It is, however, in the end, entirely the choice of the site administrators as to whether or not they wish to allow it.
I would submit, if it should be the case that political discussions/arguments/flame wars are to be allowed, there should be a clearly defined boundary: political issues have no place - ever - in any discussion regarding choices of tools or the collecting of tools.
Just my lousy two cents.