Social networking behind the corporate firewall increases 500%, creates big vulnerabilities

The article is quite interesting, as it is about the danger that corporations are confronted with by the usage of social media by the employees.
Social media are increasingly used by not only private content but also business relevant content. Corporations are often not able to control the transmitted data, i.e. encyption is used by the social networks. This may be dangerous and expensive for the corporations in the case of espionage.