Competition is generally a good thing, because it makes people, schools, companies, etc., work harder to excel. It loses its benefits, however, when it degenerates into a war. I have seen it in school rivalries, political campaigns, and disagreements on technology. A reasoned approach to a difference of opinion, with civilized discourse, can often lead to benefits for both sides, while a war, whether of words or actions, is no more than a bunch of people who are either unwilling or unable to carry on a logical, coherent conversation. It's so much easier to stick with a stereotypical view of the other guy; that way, you don't have to make the effort actually to think. As technical professionals, we should be above the rudeness of the bigots. Please try to avoid the flaming, fanboy, "mine's better than yours 'cause it's mine" mindset, and use these forums for what they.re designed for.