From my Forbes.com blog The New Persuaders:
The study of Fortune 500 companies showed that not only Facebook and Twitter but the venerable social medium of blogging all have substantial roles among the largest companies:
* 28% of companies this year had corporate blogs, a big rise from 23% in 2011 and in fact the largest rise in blog usage since 2008. The gap with smaller, “Inc. 500″ firms, 37% of which were using blogs last year, appears to be closing.
* 73% have at least somewhat active Twitter accounts on which tweets appear at least once a month, up 11% from a year ago.
* 66% of companies have a Facebook page, up 8% from last year.
* 62% have YouTube accounts this year, the first time the researchers tracked YouTube usage).
* Only 2% of large companies have Pinterest accounts so far.
Of course, none of these stats reveal how well these companies use social media–and I suspect many of them are still deep in learning mode.
Read the complete post, with a detailed infographic, at The New Persuaders.