Interesting topic as I was just going to point out that on skating forums in general there is a LOT of bickering between MK fans and SC fans (or between fans of any top rival skaters). I don't know...is it the contrast in their skating style that each has that fuels this arguing? Or is it just the fact that they compete against each other a lot?
I only think this happens between die-hard fans. The "in-the-middle" fans who like both MK and SC seem to get along; it's the outright Kwan fans/fanatics and Cohen fans/fanatics that fight a lot. Personally, I try to stay out of the fights, and of being an outright fan of either skater. Now, here arises another question: why can't fans get along?
From my experience reading tons of bash threads, the fights usually start when someone posts an unfounded opinion (slighting another skater), and then when fans of the opposing skater read, they get emotional and strike back. For example, an SC fan says something not too nice about MK (but maybe not bashing) and then the MK fans jump on him/her, so on. The opposite is also true to an extent. Maybe if people ignored the bashes or slights, that would help? Sometimes people are just looking to start a fight, and they usually succeed.
I have been written off as being a Sasha fan before when I said I didn't want MK to win a particular competition, with NO mention whatsoever of SC. I think maybe fans/fanatics should try to be a little more open when on an MB; that is, realize that not everyone will like your skater/opinion/whatever, try to stay away from demeaning rival skaters (unconstructive criticism), and don't get on defensive mode every time you see a comment that doesn't exactly favor your skater/opinion/whatever (unless it's something uncalled for, like insults).
At least now, since the season is over, I predict a significant increase in fights between fans as topics like "Who was better overall last season?" start popping up.
Re. the question at hand, being "in-the-middle", I tend to go for the underdog(s) partly because I like surprises, and good competitions. As far as skating goes, they each have different styles, and there are things I can say I like/don't like about both.
On a perfect skating forum, fans of all skaters would get along. But, alas, there is no perfect skating forum, and most likely never will be.