If we see one more Facebook friend request by some shirtless dude posing in a bathroom mirror holding a camera phone I think I will organize an etiquette posse. And ladies, please for the love of Snookie, stop with the full booty poses, puckered lips and stilettos. Sure; Facebook is fun and should be a reflection of your personality, so if you are in no need of a job, shower, shelter or friends, then I guess that picture of you picking your nose won’t be such a big deal. For the rest of us, looking good in those tiny little squares could be the difference between getting a job or landing a date.

I spoke with a handful of professional photographers–two of which shot Hollywood celebrities on a regular–about the common mistakes and missed opportunities folks make when they post photos on Facebook and other social networking sites.

Take out your notebooks, this is good stuff.