Twitter analyzed the approximately 25 billion Tweets sent so far in 2010 and found that BP’s Deepwater Horizon oil spill in the Gulf of Mexico was the top trend for the year. The complete list, from the Twitter Blog:

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 and the Deathly Hallows

10: Pulpo Paul