Everything old is new again. Today it's Gawker's Nick Denton saying that comments on the web are hopeless. And we've been here before. The only real difference between the two articles is that Denton puts the signal:noise ratio at 1:5, where as the Fark guy put it at 1:99.
And again, I can't decide if the bigger irony is the comments on the CNN article... or the Slashdot article about the CNN article.