I'm no fan of Microsoft but way to quote them out of context.

. are granting us an irrevocable, royalty-free, worldwide right and license to: (i) use, review, assess, test and otherwise analyze your entry and all its content in connection with this Contest; and (ii) feature your entry and all content in connection with the marketing, sale, or promotion of this Contest (including but not limited to internal and external sales meetings, conference presentations, tradeshows, and screen shots of the Contest entry in press releases) in all media (now known or later developed)