The Lifestream actually requires people to label links to TV Tropes as being TV Tropes links. It's a good policy, I feel.
I find sporcle to be the most dangerous sites to visit. I can spend hours on there
Oh god, sporcle is like that too. Though I usually find my release by being so damn at the quizzes that I ragequit.
After an hour or two on TvTropes, it becomes TvTropes versus my sanity.
I lose!