I'm curious, where would you prefer to go for a discussion like this one with people you've never heard from before?
That's my point: HN/Reddit/etc serve a different purpose than phpBB-style forums. The format isn't improved or superior, it's just different. I suppose it was originally popularized by Slashdot, so it isn't even "new".
It seems like you find it valuable enough to participate.
I never said I didn't?