The word filters are mostly there for our own protection. For those of us who work, the foul language can get us in trouble. And we also don't want younger members getting banned from the site by their parents for foul language. We are very lenient with the moderating, but it is good to have at least a baseline censor for the major bad words that might get us fired.

And also, the censor was designed to be funny. Someone posts a wicked rant and "fruity" pops out instead, that is somewhat humorous and adds levity to a possibly volatile situation.