Anyone know what the most contributed to spots are?

The puncak, atas 10 most populer spots are; 1. Twilight, 2. Harry Potter, 3. House M.D, 4. Youtube, 5. Friends, 6. The Simpsons,7. Heroes, 8. movies, 9. Family Guy, and 10. Grey's Anatomy. I'm not sure about the most contributed to, but these probably are being most popular. So I hope that helped :)