That's very true. If you ever tried to post at a wannabe site like DU they ban you in a New York minute. FR bans may ban disruptors, but not for posting real arguements but for posting disruptive usually anti-American opinion pieces from non-legit sources and never defending the crap they do post. FR overall has a base of posters who are based in reality with a sprinkling of nuts. Left-wing sites are completely overrun by the extreme wingnuts and only the most dillusional opinions stick around. They sit around and bitch about how the corporate-run newspapers like The New York Times is nothing but a mouth piece for, get this, the GOP.
And nuts add flavor and texture.