+1 .. Reddit's ask science is my second favorite online forum after HN.

Probably just me being an idiot, but if AskScience were separated from Reddit, I'd join to contribute questions and basic answers. Duplicate questions aside, I think it's awesome and should be a definite bookmark for anyone curious about our world. Rest of Reddit is pretty trashy though.

I actually went through and removed the reddit homepage and most of the other default reddit stuff from my account, so now it just shows AskScience and a few other niche areas. It's awesome.

That's a good idea. I would still feel dirty though. ;)

Edit: Would definitely participate if there were an active equivalent based on the HN code (tweaked to have expertise tags, etc).

Also, it has great voting guidelines (HN lacks that IMO).