In an effort to better understand how Twitter is evolving, and how it's used, the Twitter team compiled and released its list of the most-discussed topics of 2009.
Based on Twitter's "Trending Topics", which highlight, in real-time, the most popular terms being Tweeted out on the site, the year-end list charts the top topics of 2009 across several categories, including news events, people, movies, TV shows, sports, technology, and hashtags.
Twitter describes its lists, posted below, as an "interesting time capsule of what was happening as this decade came to a close."
One topic surfaced repeatedly during the year, Twitter notes:
Twitter users found the Iranian elections the most engaging topic of the year. The terms #iranelection, Iran and Tehran were all in the top-21 of Trending Topics, and #iranelection finished in a close second behind the regular weekly favorite #musicmonday.
See Twitter's list of 2009's most-discussed topics below -- then tell us what you think! What surprises you? Terrifies you? Excites you?
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