The Gulf Oil Spill was the top trending topic on Twitter this year. Here are the top 10 trends this year:
1. Gulf Oil Spill
2. FIFA World Cup
3. "Inception"
4. Haiti Earthquake
5. Vuvuzela
6. Apple iPad
7. Google Android
8. Justin Bieber
9. "Harry Potter & the Deathly Hallows"
10. Pulpo Paul
