I recently found out an advertisement via Facebook where they use one of your friends and make it look like they initiated a chat session in FB towards you and show you a link that sends you to a "sign up and lose money" deal. That was quite interesting to witness because I do that all the time. I tell my friends on fb via chat that I just found something cool online and I think that they should go check it out and usually the person trusts me enough to click on a link in the chat box. So whoever is doing this type of advertisement is really tricky and knows a lot about FB. Just a warning to anyone who hasn't seen this before. Ask your friend a question or two to find out if it is really them or a bot of some sort.
Take care out there on the web.
-Quincy