This is the article I had to read for class this week.
http://thejournal.com/articles/2008/11/19/suspended-teacher-in-facebook-incident-ignites-debate-should-online-privacy-for-educators-exist.aspx
EDU 697 Edit: I am not certain this goes to what is being discussed except to say that again just be careful what is posted on social networking sites, you never know who is going to see it. Just because you make your site private doesn't mean you don't have a friend of a friend who showed someone else who know your boss. Sounds confusing but it is very possible. I can give an example of myself. Not to long ago, Halloween of this year to be exact. Where I work now doesn't celebrate all holiday's and I love Halloween. I was sad that is wasn't a big deal and posted it on my Facebook. Well it got back to my employers and I still don't know how. They considered it an ethical issue because I was posting about work on my site. Thankfully nothing ever came of it and I deleted the post, but it shows no matter how private you think you make things, its possible to still be seen.