[KaVir]

There's something of a "rising tide lifts all boats" attitude. Having a presence on Wikipedia helps all muds, and the whole "conflict of interest" thing pretty much necessitates cooperation, as we're not supposed to add content to articles about our own muds.

As far as the community is concerned, of course there is competition and rivalry, but most muds were only made possible by the contributions of others - and many of us give back to the community, whether in the form of code, areas, tools, articles, or whatever else.