Boring! So many one sentence replies players.
There are some, but there are others there that prefer putting more into it. It's good I suppose that both types of contributors have people to write with. Of course, the more people that get involved there, the more of both type we'll end up with, and the longer quality replies will become more common than they are now.
I'm new to it, and I prefer to write longer pieces, but I mostly haven't been because I've done a few pieces with people who like the short stuff, so I just go with it. I tend to play off what the other person is comfortable with. But that's the good thing about it; you can do whatever you're comfortable with. And I think that should be encouraged, especially since there isn't that big a base there yet.