Ogilvy & Mather, one of the sponsors of Social Media Week (which starts today), has used the occasion to launch Social@Ogilvy, a global practice that brings together the company’s digital experts across companies and around the world.

The division began with Ogilvy PR and now spans across marcomms, sales, and other areas. There are 550 social media experts and another 4,000 digital experts working within the group. John Bell, who is delivering an #SMW12 keynote as we type, is the global MD of Social@Ogilvy, working out of the group’s HQ in New York. Christopher Graves, CEO of Ogilvy PR Worldwide and Gunther Schumacher, COO of OgilvyOne are among the others heading the division.

After the jump, we’ve got a Slideshare deck from the group called “Does investing in social media create business value?” And you can click here to check out the Social@Ogilvy blog.