Well, after the first twenty years of watching these things over and over again and reading all the cast-and-crew memoirs, you start to pick up bits of info. :)
Actually, as Trekkies fans go, I'm relatively normal.... I've never dressed up or walked down the street giving people the Vulcan handsign or demanded a more respectable title like "Trekker" or anything. Check out the "Trekkies" documentary to see people who've gone way too far.
The hardest-core Trekkies would never hang around a site like FR, being far more concerned about the election of the President of the United Federation of Planets than that of the President of the United States.
-Dan