Thats an interesting observation. Username based forums value the content, while Twitter (where your identity is public) values the individual and his/her exper

Thats an interesting observation. Username based forums value the content, while Twitter (where your identity is public) values the individual and his/her expertise. The issue with the former is that it relies on upvotes of people from the community. This leads to the problem of people upvoting comments on topics in which they lack expertise (ie developers upvoting comments about astronomy that "sound right") This results in a trend (on HN and reddit) where the most upvoted comments are comments that "sound correct", but would not hold up against scrutiny of people who have expertise in that area. I like that HN censors the upvote count, so we are forced to judge the comment on its own merit.