Social networking

I see that social networking has become popular for all ages. I know a lady at work who is almost 60 years old  who uses it to stay in touch with old friends andfamily. I myself only got on Facebook because a friend of mine had pictures posted and wanted me to see them. I find that the younger you are more information is given or statements made that I would never dream of saying. My daughter uses it to stay in touch with friends at college. I have found it to be a useful tool but not one I am faithfully committed to.