There is an application on facebook ( http://apps.facebook.com/atlaspledge/?page=sent&mode= ) with which you can post a comment on your facebook page about Atlas Shrugged. Both K-Mac and I and some others (Diana Hsieh) have posted small notes praising the book and what it/Objectivism has meant to us.
I have already received a comment from a non-O’ist friend who said that he will read the book based on what I wrote about what it meant to me. As they say all it takes for change to happen is one person to get involved 
So come on… I know there are other Facebookers in this forum… lets turn this thing viral. 