> The site design is similar to HN on this front. I think that it is culture that separates the two instead.
Agreed. Culture is important.
Regarding my comment on identity: I'm trying to make a more subtle point, which is that it's difficult to build a long-lasting relationship via an online community if every comment is essentially speaking to a broad, new audience. I can't say, "Hey User-X, you mentioned this last week and I was thinking about it yesterday, and wanted to say this...". There is no continuity and no relationship-building.
Another (poor) metaphor would be: imagine your job is a traveling elevator repairman/repairwoman. You go from building to building, working at each for a few days. Sometimes, you go back to the same building. Maybe you strike up a conversation with each building's maintenance staff, but the fact that you have no enduring identity, means that you never quite get to know anyone, even if you recognize some of the same faces.
Forums didn't have this issue, largely because of avatars, signatures, and basically being forced to read every comment.
> This is desirable imo. It should not matter who makes a post but rather the quality of the post itself.
I think this makes sense at first glance, but the downsides (personality cults) are a separate issue that arises from the voting system. If you had comments/posts organized chronologically, 'cult leader' comments wouldn't be at the top. This also only seems to happen when the community is large enough for an individual to be anonymous within it.