Once registered, you can:

  • - Read additional free articles each month
  • - Comment on articles and featured creative work
  • - Get our curated newsletters delivered to your inbox

By registering you agree to our privacy policy, terms & conditions and to receive occasional emails from Ad Age. You may unsubscribe at any time.

Are you a print subscriber? Activate your account.


Jack Dorsey, Executive chairman, Twitter Inc.

Published on .

What: Executive chairman Where: Twitter Inc., San Francisco Why: Dorsey's blogging service has more than 500 million users worldwide and, over the past year, has dramatically ramped up its ad offerings of promoted tweets, promoted trends and promoted accounts. This spring, the company launched expanded tweets, a partnership program with media companies that allows viewers to preview linked stories and videos.
Most Popular
In this article: