Twitter Gets a New Chief Executive


Chief Operating Officer Dick Costolo, 47, is Twitter’s new chief executive. Evan Williams, the social networking site’s co-founder and CEO, stepped down. Williams shared that his plan, goal, is to focus on product strategy.

“Building things is my passion,” Williams in a blog post on the company’s web site.

Williams ran the privately held San Francisco Company for the last two years.

Costolo an early investor in Twitter, former advertising product manager at Google, joined the company a year ago. The union was to help forge search partnerships with Google, Yahoo and Microsoft Corp., as well as be a driving force in its advertising initiatives.

Twitter’s redesign of its web site was led by Williams to make the site easier for people to use, and get advertisers noticed.

Twitter’s users post more than 80 million updates daily, and the employees ballooned to 300. Twitter’s work-force will grow by hundreds per analysts.

It will put increasing pressure on its chief executive.