I too am on it and really enjoy it. I have a huge family and I am able to keep in contact with cousins and siblings and even my kids on it. I love that you can leave quick notes like having a real conversation rather than having to write a lot. I think I have gotten to know some of my cousins better through FB than I used to because we share mundane day to day stuff that is what our lives really consist of.
Count me as a fan!