Twitter's top 10 users

Twitter's top 10 users

1. Justin Bieber -- 33.333 million

2. Lady Gaga -- 33.329 million

3. Katy Perry -- 31.4 million

4. Rihanna -- 27.9 million

5. Barack Obama -- 26.1 million

 6. Britney Spears -- 23.3 million

7. Taylor Swift -- 23.1 million

8. YouTube -- 22.2 million

9. Shakira -- 19.3 million

10. Kim Kardashian -- 17.2 million