I'll say what I just said in the game table chat...
I don't have a problem with wargame questions posted here, personally, I think they belong in the same crowd, and the same ballpark, as RPGs. Wargames and RPGs share a common ancestry in game-mechanics and playerbase. Both are a leap of sophistication above board games. Tabletop gaming isn't a big enough industry that we can afford to be too fragmented or too picky. =)
(In fact, maybe we could broaden the site to Tabletop Gaming to widen our audience slightly? Just an idle thought.)
@BrianBallsunStanton:
How would you differentate wargaming
from board gaming? RPG from wargaming?
Under most circumstances, I don't ;) There are board games and wargames with RPG elements, and vice versa... the line is exceptionally blurry, which I guess was my point. As a rule of thumb, I would say that any game which clearly doesn't have a roleplaying (acting in-character) element, and doesn't have a complicated enough rules system to warrant needing an online community to ask rules questions about it, probably doesn't belong.
For example, chess clearly doesn't belong. It's a game with a lot of deep strategy worth discussing, but the rules are really simple and well-known.
Jovian Chronicles is a game that looks and plays like a board game, but has distinct characters and an RPG theme/element. You are more likely to find answers about it on this site than on a board game enthusiast site, so I think it's reasonable to ask questions about it.
If you are creating your own dungeons for HeroQuest, while that may not be "true" RPG material, I think this site would also be a great resource, and I wouldn't really say it's off-topic.