Thing 18 - Facebook and MySpace

Yes and yes.
Have both..
Use Facebook exclusively, but check on MySpace once in a blue moon.
I can see how these can be helpful for Media Specialists, to promote the media center. Problem is, we can't use this at school nor are we comfortable making friends with students - legal issues and all, mentioned earlier in an in-between post.
I joined the ALA group, the Library 2.0 interest group and Facebook AppsForLibraries in Facebook using my family/personal account. As a rule reject any requests to befriend me unless I know the person in question, so I guess I can't be your friend - don't be crushed, nothing personal!
Here is MySpace URL: http://www.myspace.com/crazymom1128. I will accept your request if you make one!
The 7 Things you should know about Facebook pdf documents is a bit outdated. Still, it shows an potential use of Facebook I had not anticipated - purposefully using the site to research a trip. TripAdvisor and Lonely Planet are two sites I would think of as having more appeal for this purpose.
The Askthelibrarian.org video contest winners were cute. The site, of course, is not updated every day and that is unfortunate because both Facebook and MySpace keep close tabs on the last time information was changed or posted. Like any other web presence, these social networking places need to be kept up to date or else they fall to the bottom of the 200+ friend lists.
I think these is a SOCIAL use for these sites and I can't imagine my busy college students or even recent graduates using the sites forever. The pages are too fluid, the sites keep changing the main pages, there is little control on content (how do you control what somebody posts on your wall???) and I am not sure these will ever be appropriate to use with the under 18 crowd.