This is becoming an increasing problems with public contributions to the news. For instance the BBC has been calling for people to send them their pictures/videos of the recent events in London but if you read their terms and conditions on their website, by sending them a contribution you agree to them owning the copyright of the images... "Contributions to bbc.co.uk Where you are invited to submit any contribution to bbc.co.uk (including any text, photographs, graphics, video or audio) you agree, by submitting your contribution, to grant the BBC a perpetual, royalty-free, non-exclusive, sub-licenseable right and license to use, reproduce, modify, adapt, publish, translate, create derivative works from, distribute, perform, play, make available to the public, and exercise all copyright and publicity rights with respect to your contribution worldwide and/or to incorporate your contribution in other works in any media now known or later developed for the full term of any rights that may exist in your contribution, and in accordance with privacy restrictions set out in the BBC's Privacy Policy. If you do not want to grant to the BBC the rights set out above, please do not submit your contribution to bbc.co.uk. "