Facebook photo terms and conditions.
Anyone else concerned at FB's terms and conditions for any images you post publicly?
"For content that is covered by intellectual property rights, like photos and videos (IP content), you specifically give us the following permission, 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). This IP License ends when you delete your IP content or your account unless your content has been shared with others, and they have not deleted it."
I've just deleted all my photos from FB and will only use links from 500px/flickr etc now.