The Tweets from the Top

Which CEO has the most influence when it comes to social media? Is it the guy who invented Facebook? Nope. Mark Zuckerberg isn't even one of the top 50 most influential CEOs on social media, according to the Reuters & Klout 50. How about Warren Buffett, the third wealthiest person in the world? Well, he's sent only one tweet, so his social media impact is, well, lacking. The person leading the Reuters & Klout 50 is the former queen of daytime TV, Oprah Winfrey.

1. Oprah Winfrey

Company: HARPO

Klout score: 92

Followers: 15 million

2. Rupert Murdoch

Company: News Corp.

Klout score: 91

Followers: 371,000

3. Richard Branson

Company: Virgin Group

Klout score: 90

Followers: 2.6 million

4. Mark Cuban

Company: HDNet

Klout score: 87

Followers: 1.4 million

5. Jack Dorsey

Company: Square

Klout score: 85

Followers: 2.1 million

6. Kevin Rose

Company: Milk

Klout score: 85

Followers: 1.3 million

7. Steve Case

Company: Revolution LLC

Klout score: 85

Followers: 547,000

8. Steve Forbes

Company: Forbes Media

Klout score: 84

Followers: 48,000

9. Tim O'Reilly

Company: O'Reilly Media

Klout score: 83

Followers: 1.6 million

10. Dennis Crowley

Company: Foursquare

Klout score: 83

Followers: 55,000

11. Mark Benioff

Company: SalesForce

Klout score: 83

Followers:

12. Jonah Peretti

Company: Buzzfeed

Klout score: 82

Followers: 22,000

13. Esther Dyson

Company: EDventure Holdings (Dyson sold her company in 2004 but remains high on the list)

Klout score: 82

Followers: 35,000

14. Dick Costolo

Company: Twitter

Klout score: 82

Followers: 1 million

15. Michael Dell

Company: Dell

Klout score: 82

Followers: 59,000

16. Micky Arison

Company: Carnival Corporation

Klout score: 80

Followers: 82,000

17. Dave Morin

Company: Path

Klout score: 80

Followers: 344,000

18. Jeff Weiner

Company: LinkedIn

Klout score: 80

Followers: 23,000

19. Scott Heiferman

Company: Meetup

Klout score: 80

Followers: 16,700

20. Daniel Elk

Company: Spotify

Klout score: 79

Followers: 29,000

21. Drew Houston

Company: Dropbox

Klout score: 79

Followers: 20,000

22. Michelle Rhee

Company: StudentsFirst

Klout score: 79

Followers: 41,000

23. David Karp

Company: Tumblr

Klout score: 79

Followers: 28,000

24. Richard Rosenblatt

Company: Demand Media

Klout score: 79

Followers: 102,900

25. Stephen Elop

Company: Nokia

Klout score: 79

Followers: 34,000

26. Charlene Li

Company: Altimeter Group

Klout score: 78

Followers: 78,000

27. Bob Parsons

Company: GoDaddy

Klout score: 78

Followers: 37,000

28. Tory Johnson

Company: Women for Hire

Klout score: 78

Followers: 36,000

29. Mark Pincus

Company: Zynga

Klout score: 78

Followers: 37,000

30. Marco Arment

Company: Instapaper

Klout score: 78

Followers: 49,000

31. Pete Cashmore

Company: Mashable

Klout score: 78

Followers: 44,000

32. Chad Hurley

Company: Delicious

Klout score: 77

Followers: 453,000

33. Andrew Mason

Company: Groupon

Klout score: 76

Followers: 27,000

34. Jason Calacanis

Company: Mahalo

Klout score: 76

Followers: 159,000

35. Angela Ahrendts

Company: Burberry

Klout score: 75

Followers: 14,000

36. Sumaya Kazi

Company: Sumazi

Klout score: 74

Followers: 26,000

37. Lucy P. Marcus

Company: Marcus Venture Consulting

Klout score: 73

Followers: 12,000

38. Jason Fried

Company: 37signals

Klout score: 72

Followers: 98,000

39. Jon Oringer

Company: Shutterstock

Klout score: 71

Followers: 9,500

Company: Etsy

Klout score: 71

Followers: 7,000

ABOUT THE RANKING

Reuters and Klout partner to create the ranking using social media metrics. To make the list, a user must be a CEO (or former CEO), active on Twitter, tweeting in English and have a handle separate from their company's. The Klout Score measures influence based on the user's ability to drive action.