Depends on the culture of the place. My two favorite non-Hubski websites are NYT and Ribbonfarm. There, the readership is such that the comments are usually of pretty high integrity. I don't like that NYT doesn't allow for discussions, although I've read that they are working with the MacArthur Foundation to create a commenting platform that they say will totally change the way commenting on newspapers works. I'm interested to see it, and hopeful that we can apply some of their concepts here, if they're decent. It's amazing how bad other supposedly high brow news sites' comment sections are (e.g. NPR, Washington Post, Economist). It leaves one with the impression that many of the commenters probably aren't intelligent enough to digest what it is they've just read. The only website I actually comment on is self-evident from this comment.