RulesofThumb.org is my new favorite internet time waster. Only after spending hours on this site, instead of coming away with an empty brain but high score or an inordinate amount of knowledge concerning the love lives of my favorite trashy celebrities, I am learning something. Actually, I'm becoming more street smart, if you want to be technical about it. Rules of Thumb posts are awesome nuggets of advice from users about everything — from how much to tip a hotel maid (answer: about a dollar per night you stayed there) to useless but interesting (and subjective) trivia, like how Free Bird is the most annoying song request ever.
You know I love the computers section best — there are gems like "When you ask someone if their computer is turned on, make sure that they are not talking about their monitor," and "Post only those statements or opinions online that you would proudly wear on a T-shirt." Amen!