I don't know about how much of a bias HN has. A lot of people are openly critical of HN products when they honestly don't like them: I'm often critical of Reddi

I don't know about how much of a bias HN has. A lot of people are openly critical of HN products when they honestly don't like them: I'm often critical of Reddit, for instance, which was one of the first big things here. And in many cases, I don't know what companies are YCombinator and which aren't. Meanwhile, a lot of services that do get a lot of praise here aren't actually part of the incubator program. In this case, Disqus is simply more used. I've never seen IntenseDebate outside of its web site, though I prefer its aesthetic look a bit more. I don't like the colloquial "Easy Tiger" message when you're not logged in, though, so it balances out.