Artists's be wary of where you post pictures of your artwork. Facebook is a popular venue for posting pictures. You retain the copyright, but did you know that you are granting them license to use and display your photos.
http://www.facebook.com/legal/copyright.php?howto_report#!/help/?faq=12008 As you all know, by posting information on Facebook, it is saved to their data system FOREVER. On
Facebook's policy page, they state in their content section that "One of the primary reasons people use Facebook is to share content with others. Examples include when you update your status, upload or take a photo, upload or record a video, share a link, create an event or a group, make a comment, write something on someone’s Wall, write a note, or send someone a message.
If you do not want us to store metadata associated with content you share on Facebook (such as photos), please remove the metadata before uploading the content." In other words, do not post any pictures on to Facebook, if you do not want them to store the data that is associated with the photo, which is the photo itself. It is a rhetorical statement.
An alternative to Facebook is
Flickr Creative Commons.
Flickr Creative Commons is a non-profit alternative to full copyright. Creative Commons is a nonprofit corporation to make it easier for people to share and build on the work of others, working within the rules of copyright. They provide free licenses and other "legal tools to mark the creative work with the freedom the creator wants it to carry, so others can share, remix, use commercially, or any combination thereof." Creative Commons seems to me the best way to share your work on the internet as well as holding the legal rights to your photos.
A synopsis of Creative Commons copyright policy
-Attribution means that you allow others to copy, distribute, display and perform your copyrighted works and other works based on it, if they give you credit.
-Noncommercial means that you let others copy, distribute, display and perform your work, but for non commercial purposes only.
-No Derivative Works means that you let others copy, distribute, display and perform
only verbatim copies of your work, not derivative works based on it.
-Share Alike means that you allow others to distribute derivative works only under a license identical to the license that governs your work.
By a comparison of these two website's privacy policy, you have much better control over the work you post under Flickr Creative Common's policy. You have no control of what Facebook and what other users do to your work on Facebook, but under Creative Commons, you have legal rights to your work and you own the photo that you post on their website. You pretty much lose your rights to the photo that you post on to Facebook.
Of course in addition you can always add a watermark to the photo that your uploading, but that does not cover legal rights to your property, i.e. your photo or your artwork. Facebook seems to me as an unsafe place to post anything at this point. After doing this research, I realize that I should change where I post my pictures of my own artwork. I think the safest place to post my artwork is under Flickr's Creative Commons. I am worried about my rights to my work and that people could possibly copy and reproduce my work.