As for the stories, I've been here for nine years. Here are the general themes as best as I can remember them:
Early 2000s - Old attractions vs. New attractions, Eisner stinks vs. Disney is a Business, "D-Troops", IASW wars, "Calling All Ryans" - the first major random chat thread, Mission:Space hype, Monorail Expansion, mAeLStRoM RoCks!
Mid 2000s - Expedition:Everest hype, Points for posts and Woody13 - the guy with the walking spider avatar and a bunch of (requested) negative points, Pixar Rules vs. Pixar is overrunning the parks, Picture and Game threads expand, DisneyQuest closing, Movies based on MK attractions.
Late 2000s - Old attractions vs. New attractions, Dining Plan (Free Dining! vs. Menu contraction due to $@#% free dining), The Wand, The Adventurer's Club, "Wal-marting".
There's always been crazy rumors by questionable posters, but there's always been solid information from reliable posters and the site owner. There's also always been lively, reasonably moderated, interesting debate.