Please seed the main site with applied math and contest-math type questions! We've been talking a lot about what counts as math related, and these types have come up in theory, but until we have some examples it's difficult to discuss what we do and don't want on math.SE.
(Okay, this isn't a question yet. Let's use this for discussion of what is encompassed by mathematics-related and what isn't, for those who see fit not to include everything. And maybe, in general, how to deal with the varieties of language and background that questions will inevitably be couched in).