28% of Fortune 500 companies (139) already have corporate blogs, according to the study conducted by the University of Massachusetts in Darmouth (USA) distributed in the month of August of this year. This figure represents a growth of 5 points from 23% in 2011, and represents a 75% growth compared to 2008, when only 16% of companies used this tool. Of the 5 largest companies, 2 already have blogs (Exxon and Wal-Mart), and 3 (Chevron, ConocoPhillips and Berkshire Hathaway) not yet.

The use of corporate blogs among Fortune 500 companies is growingIn the past month of January, the Center of Marketing Studies of that university had detected a fall in the use of the tool of the blog on the part of the great companies of the Fortune 500 in 2011. The blogs were used 37%, with a decrease of 26% compared to 50% of use in 2010 and 18% compared to 45% in 2009. Despite this reduction, 92% of companies recognized their usefulness, compared to 86% in the previous year.

The 139 companies with corporate blogs represent 54 of the 71 industries present in the Fortune 500 line, with a significant presence in sectors such as telecommunications, where 40% of companies (6 of 15) already use it, commercial banking with 30 % (6 of 20), service / utilities companies with 27% (6 of 22) and those of commerce with 25% (7 of 28).

365 of the Fortune 500 companies (75) also have corporate Twitter accounts. It does not seem that the positioning within the total list influences the fact of having a corporate Twitter account, since 44% of the first 200 and 37% of the last 200 have it. The top 10 companies on the list already have Twitter accounts.

Of all the companies on the list, Google has the most followers at the time of the study, with about 4.8 million, with 31% growth over 2011.

Last July, Twitter was also the most used tool among the Fortune Global 100 companies, with 87% of them active, according to a study by the consulting firm Burson-Masteller. YouTube (79%) and Facebook (74%) occupy the second and third place within the social media of this list. New platforms such as Google + (48%) and Pinterest (25) have achieved significant levels of penetration.

Returning to the Fortune 500 list, 62% of companies have a YouTube corporate account, and 11 companies (2%) are already present on Pinterest.

Facebook has also attracted the growing interest of more Fortune 500 companies, with a presence of 66% and an increase of 8% over the previous year. 8 of the 10 leading companies on the list (Wal-Mart, Chevron, ConocoPhillips, General Motors, General Electric, Fannie Mae, Ford Motors and Hewlett-Packard) have Facebook pages, and only 2 (Exxon and Berkshire Hathaway) still have do not.

Among the Fortune 500 companies, Coca Cola leads Facebook for the second consecutive year with 42.3 million fans, followed by Walt Disney with 32 million.