The survey included more than 1,400 CIOs from companies across the United States with 100 or more employees.
I think that this is absurd. People will always find ways to access Twitter. There are the simple solutions like Unblock Twitter, and the more complicated options such as proxies and others.
No matter what you do, if someone wants to access Twitter from work, he will find a way to do it. It is impossible to block information flow. People that want to have access to information will always find a way to get it. There is no question about it. Even with the recent events around the Iranian Elections, the Iranians found a way to access Twitter, and this is after their government worked really hard to block Twitter, Facebook, Youtube and all the rest. This battle is going to be hard but the people will win!