Social Networks become more and more blocked in organisations & companies

[Hans-Peter Korn]

Just now I read, that the access to social networks like facebook and Xing is blocked now for employees of the government of the City of Zürich. And such blockings are already active for a lot of other companies worldwide - see e.g. http://www.bizzia.com/buzznetworker/companies-block-social-media-si...

Taking in account, that Ning also is a Social Network, I can imagine, that our http://solworld.ning.com also will be blocked for usage within organisations & companies - and a lot of information about SF stored in http://solworld.ning.com can be used with a private PC only....

What is your experience? Do you know organisations or companies where ning-groups are blocked?