On Facebook, everyone has a "wall" where people can post stuff ranging from a simple hello to a heated diatribe defacing your opinion. All of your Facebook buddies can read them. It can be dangerous. If you run a lighting company, do you really want your employees viewing your wall? Or, for that matter, would you like to worry about your boss seeing some offbeat remark you may have made? Personally, I don't worry about such stuff, because I've been perceived as a clown for so long that people expect it.
From "LD-at-Large" by Nook Schoenfeld, PLSN, June 2010