Copyright issues - submissions for contests/etc.

User-Submitted Content: You agree that any content (including but not limited to pictures and images) you submit is on a non-confidential basis. By submitting any content to the Site, you keep ownership of the copyright of the content, but you: (a) irrevocably grant to SIGMA, its parents, subsidiaries, affiliates, and its successors, assigns, licensees, and agents, the non-exclusive, royalty-free, perpetual, irrevocable, worldwide right and license to reproduce, edit, modify, distribute, publish, display, market, promote, sell, license, broadcast, sublicense, transmit, and otherwise commercially and non-commercially exploit the content, in all channels of distribution, the content, all intellectual property therein, and derivative works made from the content, without compensation of any kind, in whole or in part, in all forms, formats, media and versions, now known or hereafter developed, including as part of an electronic database, and to license to third parties to exercise any and all such rights, in connection with advertising the goods and services of SIGMA, its parents, subsidiaries, affiliates, successors and assigns.
You shall have no right of approval, no claim to compensation, and no claim (including, without limitation, claims based on invasion of privacy, defamation, or right of publicity) arising out of any use, blurring, alteration, or use in composite form of your photo or image or your name, picture, likeness, address (city and state), e-mail address, or biographical information. You expressly grant SIGMA the right to repost any such submitted content in any altered or unaltered form, without any further authorization from you, to other websites, including but not limited to <facebook.com>, <twitter.com>, <flickr.com>, and <youtube.com>.