Sorry to be so meta, but what on earth was the point of extracting programmers.stackexchange.com from stackoverflow.com? Is this why so many questions get closed as being "off topic" on stackoverflow now? </rant>
The original idea was to make it a bit of a waste bin for all the softer questions which had relevance to programmers but weren't directly related to programming. Remember the SO model takes a pretty hard line on what's relevant to try and minimise the noise and this was seen as a solution to what to do with questions which were interesting and semi-relevant but seemed too much like noise to many.
After while Programmers was becoming a bit too much of a dumping ground so tightened up the rules to make it less random and chatty and more of a valid site in it's own right for topics around software development but which are not directly programming related.
> What programming methodology best fits my project and team?
A question like this tends to elicit a much more forceful response on P.SE than it will on Stack Overflow. Largely because the folks who moderate P.SE aren't terribly fond of the common perception that their site is just a dumping ground for questions that are too wishy-washy for SO.
Looking at their current faq, it seems that they've better defined (and perhaps somewhat re-defined) what is to be asked there. Understandable as I stopped browsing the site because the questions got annoying. Compare the old faq: http://web.archive.org/web/20100912194040/http://programmers...