I think that when someone sees a comment that would otherwise not be agreeable on a personal level, when it has votes from many other members, it has a tendency to sway your personal convictions a bit, just enough to make you second guess your own opinions.
This seems like a benefit to me. If I'm skimming through a comments page on a topic I'm not fully familiar with, seeing an opinion I would otherwise disagree with voted up should make me update; it's evidence against my current opinion.
This seems like a benefit to me. If I'm skimming through a comments page on a topic I'm not fully familiar with, seeing an opinion I would otherwise disagree with voted up should make me update; it's evidence against my current opinion.