I wonder if it was just the first group to dominate at reddit meant that it they would always downvote submissions that didn't confirm their outlook, attracting more people with a like mind, and repelling people with differing opinions.
If I owned reddit I would have modified it so that you could have blocked submissions from people or sites you didn't like. That would have helped make it bearable for people like me.
A "tipping point" in other words. That seems plausible. I think the problem with simply blocking people and sites is that the site still "tips", and you end up ignoring too many people. The happiest people are those who dont' have to ignore anyone.
Which brings up another point - do you really want to foster debate? Maybe it's better to just feed people what they want. If I can't have thoughtful, considerate, and informed debate, I think I'd rather just have the echo chamber than impolite, rude, paranoid extremist rants.
