Hospitals cutting off social media access

A disturbing trend in healthcare facilities is blocking social media sites for staff. I would be very interested in knowing how you are all dealing with this and what methods work best for allwoing access, yet controlling it so that it is appropriate and effective.

Some helpful resources are:

http://blogs.healthleadersmedia.com/marketshare/

http://ebennett.org/

http://www.socialmedical.com/

http://www.vantageclinicalsolutions.com/blog/2009/06/04/in-health-care-social-media-requires-strategy/

http://www.kevinmd.com/blog/2009/05/hospitals-are-using-social-media-like-twitter-facebook-and-blogs-for-advertising-to-patients.html