FWIW, I think it's less about bias (as a sort of measure of noise) and more about the general quality of conversation. Even if all of the biased camps balanced

FWIW, I think it's less about bias (as a sort of measure of noise) and more about the general quality of conversation. Even if all of the biased camps balanced each other out, the noise just becomes too much and people start looking for another forum. Or perhaps I'm just projecting my own experiences with /., digg, reddit, et al.