(Of course, Twitter hasn’t revealed the secret formulas that helped it aggregate, tabulate and rank these topics.)

In the Twitterverse, after the BP oil spill and soccer, the next most popular topic of conversation in 2010 was the movie “Inception,” followed by the Haiti earthquake and the vuvuzela. The iPad, Android, Justin Bieber, Harry Potter and Pulpo Paul round out the top 10. It’s an odd list, indeed.

The person most discussed on Twitter in 2010 was obviously he of the dedicated servers, Mr. Bieber. (It’s somewhat shocking that world events and tech gadgets were able to keep the teen phenom out of the overall top spot.) Beating out her royal highness Lady Gaga, the No. 2 person on Twitter was Brazilian president-elect Dilma Rousseff (pictured).

Here’s the full 2010 list, courtesy of Twitter, followed by 2009′s list for comparison.

2010 Twitter Trends

Overall Top Trends:
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

News Events:
1. Gulf Oil Spill
2. Haiti Earthquake
3. Pakistan Floods
4. Koreas Conflict
5. Chilean Miners Rescue

People:
1. Justin Bieber
2. Dilma Rousseff
3. Lady Gaga
4. Julian Assange
5. Mel Gibson

Movies:
1. Inception
2. Harry Potter and the Deathly Hallows
3. Scott Pilgrim vs. the World
4. Despicable Me
5. Karate Kid

Television:
1. MTV Video Music Awards
2. Pretty Little Liars
3. True Blood
4. Walking Dead
5. Grammy Awards

Technology:
1. Apple iPad
2. Google Android
3. Apple iOS
4. Apple iPhone
5. Call of Duty: Black Ops

World Cup:
1. FIFA World Cup
2. Vuvuzela
3. Pulpo Paul
4. Dunga
5. Diego Maradona

Sports:
1. LeBron James
2. Wimbledon
3. Manchester United
4. Brock Lesnar
5. Celtics

Hash Tags:
1. #rememberwhen
2. #slapyourself
3. #confessiontime (hash tag started by Usher)
4. #thingsimiss
5. #ohjustlikeme

2009 Twitter Trends

News Events:
1. #iranelection
2. Swine Flu
3. Gaza
4. Iran
5. Tehran
6. #swineflu
7. AIG
8. #uksnow
9. Earth Hour
10. #inaug09

People:
1. Michael Jackson
2. Susan Boyle
3. Adam Lambert
4. Kobe (Bryant)
5. Chris Brown
6. Chuck Norris
7. Joe Wilson
8. Tiger Woods
9. Christian Bale
10. A-Rod (Alex Rodriguez)

Movies:
1. Harry Potter
2. New Moon
3. District 9
4. Paranormal Activity
5. Star Trek
6. True Blood
7. Transformers 2
8. Watchmen
9. Slumdog Millionaire
10. G.I. Joe

TV Shows:
1. American Idol
2. Glee
3. Teen Choice Awards
4. SNL (Saturday Night Live)
5. Dollhouse
6. Grey’s Anatomy
7. VMAS (Video Music Awards)
8. #bsg (Battlestar Galatica)
9. BET Awards
10. Lost

Sports (Teams, Events, Leagues):
1. Super Bowl
2. Lakers
3. Wimbledon
4. Cavs (Cleveland Cavaliers)
5. Superbowl
6. Chelsea
7. NFL
8. UFC 100
9. Yankees
10. Liverpool

Technology:
1. Google Wave
2. Snow Leopard
3. Tweetdeck
4. Windows 7
5. CES
6. Palm Pre
7. Google Latitude
8. #E3
9. #amazonfail
10. Macworld

Hash Tags:
1. #musicmonday
2. #iranelection
3. #sxsw
4. #swineflu
5. #nevertrust
6. #mm
7. #rememberwhen
8. #3drunkwords
9. #unacceptable
10. #iwish