I actually read all of the Terms and Conditions (up to here anyway) for Nikon's My Picturetown.

  1. Ownership
    1. All rights, title, ownership and interest in and to all content, text, images, data, information and other material displayed, available or present on the Website, including without limitation, Templates and Photomovies, and all trademark, service mark, copyright, patent, utility model design, and other intellectual property and proprietary, privacy and publicity rights (hereinafter collectively "Intellectual Property Rights") in and to all of the foregoing, but excluding User Content (collectively, “Content”), are the property of Nikon, its licensors or the designated owners, and are protected by applicable Intellectual Property Rights laws. You hereby grant to Nikon(bold fonts are mine) a worldwide, royalty-free, fully paid-up, perpetual, irrevocable, non-exclusive, full right and license to publish, copy, reproduce, modify, exhibit, perform, exploit, display, transmit, distribute, make derivative works of, license, include in compilations, and/or otherwise use User Content contained in any and all Photomovies, in any format and through any means, in any media now known or hereafter created, for any purpose whatsoever.

I decided not to sign up.