I have had spam that could only have come from facebook and messages about applications being used by my friends when they haven't added them or even visited them.
Facebook is a very popular social network to stay in contact with friends. However, it has some privacy issues, such as the fact that everyone can see everything you do through the Mini-Feed. In addition, not everything is completely safe for children either.
I'm surprised by how many people fall victims to worms and viruses in my network, which is scary if you have too much personal information on your profile, because what's visible to them is visible to the virus they get. My only wish from facebook is that they make JPGs out of all of your personal information and not just your email address (so that it can't be read as text by spamming spider-bots), which is probably the least harmful piece of information when asking for people's phone numbers and addresses as well.
FB creators and/or administrators should not allow racist groups, comments and content on the site. It is a social utility NOT a forum for hate speech and racist groups.