Facebook photo privacy is more complex than most people think - including the bloggers who fill the Internet trying to explain it in simple terms.

Not only there is the basic album-level privacy setting to consider, but also what happens with Tagging (and related privacy settings) as well as the Share button when clicked by a Friend.

Has anybody seen a good, engineering-type (e.g. UML) diagram? I envision it should include the various privacy "states" a photo can be in, what causes state transitions, and the characteristics of each state?

Thanks