Twitter has posted its list of the top trends of 2010, based on an algorithm that calculates rapidly-emerging topics among the tens of millions of tweets sent every day.
It also posted top trends in several categories, including News Events, Movies, Technology and Sports, revealing what Twitter calls "things that are most meaningful in our lives."
Approximately 25 billion Twitter messages were sent this year.
The overall Top 10 Twitter Trends of 2010 were:
1. Gulf Oil Spill
2. FIFA World Cup
4. Haiti Earthquake
6. Apple iPad
7. Google Android
8. Justin Bieber
9. Harry Potter & the Deathly Hallows
10. Pulpo Paul