One thing that concerns me about the Internet in general is that people might be more likely to get closer to strangers, but they also get hypersensitive, and either only want to hang around with like-minded people, or want to demonize those that don't think like them. At its most extreme people start hating people for having other opinions, taking it personally, etc. The "long tail" or "infinite options" ends up having negatives, where people only care about their interests and don't explore other more general ideas. I also think people fear being in the minority opinion.
One thing I would suggest is to embrace a philosophy called "try to understand the other guy". I usually make sure to read all the columnists in a newspaper, for instance, regardless of their politics. I've found that while I still have my own convictions, I sometimes agree with the other columnists and they make very good points. I think that's a philosophy we need to embrace when it comes to gaming opinions as well.
I hope ENWorld can calm down in these "edition wars" problems. I wonder if there's too much sarcasm and that sets people off--then again we probably shouldn't have thin skins either.