Can anyone help me understand why some people are so vehemently opposed to certain people (or topics) having entries on Wikipedia? Why do people get so worked up about the mere existence of certain entries? Currently, an entry for Joe the Plumber is being debated. Does it really dilute the value of Wikipedia to have entries like that? I remember when some people contested my entry (I wasn’t the one to put it up), it felt like some amateurish tenure review, except with not quite the same consequences. Would anyone care to defend the practice? I’m eager to understand the motivations better.