Social Media in Medicine

I've recently been discussing how social media could be a good tool for the medical field. I'm amazed how little understanding there is about it. For example:

Did you know that some hospitals post ER wait times on twitter?
read more
Did you know some hospitals use youtube to highlight special programs?
see one
Did you know physicians AND hospitals use twitter to educate patients?
an example
Did you know hospitals are using facebook to keep their community updated?
check this out
Did you know you can find out what the competition is up to through twitter?
an example
Did you know that bad publicity can be minimized by responding in social media?
read more
Did you know some hospitals are using twitter to update families on surgery progress?
more details

I would like to propose some SM presentations for a medical organization I have spoken for previously, and I need your help. Does your spouses use social media and if so, how? If they don't participate in it, is there anything in particular they are curious about?