I just made my first sale on Facebook. Not the kind of sale that requires you to create an ad, choose your target audience, and pay so many cents per click. No, this sale wasn’t made that way. It was made in a Facebook group. If you are a fan of Facebook, you are probably in a group or two (or twenty). Your friends may have started a group about something you’re interested in, like a hobby or a celebrity. They ask you to join the group so you can get regular updates on what i