Well, it depends on what you mean as “own.” Under copyright law, unless there is an agreement to the contrary or the photograph or video is shot as part of your job, a copyright to a photograph generally belongs to the creator. As the copyright owner, you own the exclusive rights to display, copy, use, produce, distribute and perform your creation as you see fit and approve. As the subject of the photograph, you have a right to publicity, which allows you to get paid for the commercial use of your name, likeness or voice.
But what happens when you decide to post that picture on the Internet — perhaps on Facebook or Twitter (using Twitpic), or some other social network or photo-sharing site?
You may be shocked to find out that once you post on these sites, that although you still “own”� the photograph, you grant the social media sites a license to use your photograph anyway they see fit for free AND you grant them the right to let others use you picture as well! This means that not only can Twitter, Twitpic and Facebook make money from the photograph or video (otherwise, a copyright violation), but these sites are making commercial gain by licensing these images, which contains the likeness of the person in the photo or video (otherwise, a violation of their “rights of publicity”).
Facebook
Under Facebook’s current terms (which can change at anytime), by posting your pictures and videos, you grant Facebook “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. Beware of the words “transferable, sub-licensable, royalty-free, worldwide license.” This means that Facebook can license your content to others for free without obtaining any other approval from you! You should be aware that once your photos or videos are shared on Facebook, it could be impossible to delete them from Facebook, even if you delete the content or cancel your account (the content still remains on Facebook servers and they can keep backups)! So, although you may be able to withdraw your consent to the use of photos on Facebook, you should also keep in mind that if you share your photos and videos with Facebook applications, those applications may have their own terms and conditions of how they use your creation! You should read the fine print to make sure you are not agreeing to something that you don’t want to have happen.
Twitter
Twitter’s photo sharing service, Twitpic, just updated their terms of Service on May 10, 2011 (which, of course, can and will be updated at any time, from time to time). By uploading content using Twitpic, you are giving “Twitpic permission to use or distribute your content on Twitpic.com or affiliated sites.” You are also granting “Twitpic a worldwide, non-exclusive, royalty-free, sublicenseable and transferable license to use, reproduce, distribute, prepare derivative works of, display, and perform the Content in connection with the Service and Twitpic’s (and its successors’ and affiliates’) business, including without limitation for promoting and redistributing part or all of the Service (and derivative works thereof) in any media formats and through any media channels.”�
The terms go on to state that you also grant “each user of the Service a non-exclusive license to access your Content through the Service, and to use, reproduce, distribute, display and perform such Content as permitted through the functionality of the Service and under these Terms of Service. The above licenses granted by you in media Content you submit to the Service terminate within a commercially reasonable time after you remove or delete your media from the Service provided that any sub-license by Twitpic to use, reproduce or distribute the Content prior to such termination may be perpetual and irrevocable.”
http://www.nyccounsel.com/business-blogs-websites/who-owns-photos-and-videos-posted-on-facebook-or-twitter/https://www.youtube.com/watch?v=k1KtSpqFVwM