If this seems like an awful lot of clicking and hunting, it is. Facebook says it's looking into making things simpler, but for now its privacy settings are a maze. One very helpful tool that can make clear what you're sharing with whom is Facebook's profile preview tool: Go to Settings, Privacy Settings, then Profile, and type a friend's name in the box up top. You'll see your own profile as it would be viewed by that friend, and can then adjust your privacy settings accordingly.

Managing your apps and friend lists will likely give you the most bang for your buck, but for more helpful tips, check out this .