I have set up a Facebook account. I entered just the dasic for the time being. I am hesitant to put a lot of personal info up until I see how I want to use the service.
I could see this could be a way to humanize the library, by showing we are real people, just like our patrons. Also, I can promote services I am currently involved with to spread the word. It's another tool to use to enhance our ability to make the library current and relevant.
Personally I am a pretty private person, so it's going to take a while to get up to speed on these new ways to communicate.
But I'm keeping a positive attitude.