A quick read of the Facebook “Statement of Rights and Responsibilities” tells you that:
subject to your privacy and application settings: you grant us a non-exclusive, transferable, sub-licensable, royalty-free, worldwide license to use any IP content that you post on or in connection with Facebook (IP License).
And also a bit further down:
“When you publish content or information using the Public setting, it means that you are allowing everyone, including people off of Facebook, to access and use that information, and to associate it with you (i.e., your name and profile picture).”
This means Facebook can use pictures of you and your family playing in the paddling pool in any way they see fit… unless you specifically stop them from doing so via the Facebook privacy settings. Pictures of you and your children on holiday in Ibiza could- theoretically- be used by Facebook in a special promotion with the Ibiza tourist board in adverts and posters without your permission. In other words, you have already given them permission by agreeing to their terms and conditions when you set up the account.
Fortunately, there is a way to manage your Facebook privacy settings. Log in to your Facebook account and go to the top right hand corner. The second right icon is a button with a padlock on it; this is where the privacy shortcuts are located.
Click on it and drop down to Privacy Checkup. There is a very simple set of options for you starting with a default of PUBLIC, FRIENDS or CUSTOM. If you don’t have much time, just choose FRIENDS. This means only your friends can see your posts and pictures. If you have more time you can go through the CUSTOM settings menu, and change things to your liking. It’s easy to do, so why not do it now?