This is a very interesting study out of the University of Massachusetts:
In 2008, the Center for Marketing Research at the University of Massachusetts Dartmouth released one of the first studies of the Fortune 500 (F500) adoption and repeated that study every year since. The study has been expanded to include the usage of the fastest growing social media tools – Facebook and Twitter.
For the first time, this latest iteration includes information on the number of Facebook fans a company has as well as the number of Twitter followers.
This research also builds on the Center’s work since 2007 examining social media in a variety of organizations including the Inc. 500, US colleges and universities and the Forbes list of the 200 largest charities (http://www.umassd.edu/cmr).
Each May the list of the top 500 companies is released in a special issue of Fortune Magazine. The Fortune 500 (F500) list includes publicly and privately held companies for which revenues are publicly available. For more information on the F500, please visit http://money.cnn.com/magazines/fortune/fortune500/.
In 2010, 116 companies (23%) have blogs meeting our criteria for an increase of just 1% from 2009 (Exxon added a corporate blog in 2010). In 2011, 114 companies (23%) have blogs meeting our criteria. While the percentage remains constant in 2010 and 2011, there are two less companies with public-facing corporate blogs in 2011. This may signal a plateau for this mature tool among the F500.