Would you like to sporcle?

It's called Sporcle, and it's educational, entertaining, and addicting! After just two weeks of knowing about this website, I feel I have equaled the amount of learning I received during my K-12 education. Here are some of my favorite quizzes:

1. countries of the world- http://www.sporcle.com/games/world.php
2. states of the US - http://www.sporcle.com/games/states.php
   
3. NFL teams - http://www.sporcle.com/games/nflteams.php
   
4. the Periodic Table - http://www.sporcle.com/games/elements.php
5. Famous Explorers - http://www.sporcle.com/games/famousexplorers.php