It’s possible that while you’ve been busy uploading your photos, changing your status, and poking your friends, you failed to read some of the fine print in Facebook’s “terms of service,” that long, seldom-read, contract-looking-thing that you agree to in exchange for use of the site:

You hereby grant Facebook an irrevocable, perpetual, non-exclusive, transferable, fully paid, worldwide license (with the right to sublicense) to (a) use, copy, publish, stream, store, retain, publicly perform or display, transmit, scan, reformat, modify, edit, frame, translate, excerpt, adapt, create derivative works and distribute (through multiple tiers), any User Content you (i) Post on or in connection with the Facebook Service or the promotion thereof subject only to your privacy settings or (ii) enable a user to Post, including by offering a Share Link on your website and (b) to use your name, likeness and image for any purpose, including commercial or advertising, each of (a) and (b) on or in connection with the Facebook Service or the promotion thereof.

Facebook claims the right to use, and even license or sell, your content.

In case you think that sounds draconian, it’s not as bad as it sounds.  It’s worse — because the license that you have implicitly given to Facebook on all of your content never expires, even if you delete your Facebook account.

The following sections will survive any termination of your use of the Facebook Service: Prohibited Conduct, User Content, Your Privacy Practices, Gift Credits, Ownership; Proprietary Rights, Licenses, Submissions, User Disputes; Complaints, Indemnity, General Disclaimers, Limitation on Liability, Termination and Changes to the Facebook Service, Arbitration, Governing Law; Venue and Jurisdiction and Other.

Till recently, if you disagreed with Facebook’s use of your content, you could, as a last recourse, terminate your account.  Now, by clicking “I Agree,” you are giving Facebook license to sell or sub-license any content you post to their platform, forever.