What's your social media policy at work?

Here's a nice post from the HR Bartender called, 10- Must Haves for Your Social Media Policy. Check it out. I think the policy should be clear, but not so prescribed that it prevents employees from using social media for good reasons - like development. We want to encourage people to engage in informal learning that will help them do their jobs. And I agree with Sharlyn that to write a good policy, you need to understand the nature of social media - someone who has never/rarely participated in using social media should not be the one driving the creation and use of the policy. In other words, HR and training people ought to be practitioners of social media. Totally.