According to a new survey of 1,400 CIOs of companies with 100 or more employees, 54% now completely block employees from accessing social networking sites at work.

Only 10% of those surveyed let employees use social networks however they please, while the remainder all impose at least some restrictions on usage, like limiting it to business purposes only.

I'm not surprised by this but it's disappointing. To me, it's always been a management issue -- not a technology one. It wasn't that long ago that only a few employees had email access. That changed over time and so will this.

Companies will find it hard to recruit new employees if they block too much access for invalid reasons.