I feel that there are some problems with Facebook when it comes to the business world.  A lot of corporations and organizations are starting to look on Facebook to determine if you are suitable for the job.  These corporations look at such things like pictures, postings, messages and other applicants which can be added to for profile.  The security on Facebook blocks some of these things but not all of them.  Some people have not received jobs based on their profile information.  On the internet you can find pictures posted off of Facebook of drunken girls.  These are the type of things that turn off business.