I followed up on kellybean's link to a grasshopper being eaten ...
And curiosity led me to read their terms and conditions:
6.2 You hereby grant DPChallenge.com a nonexclusive, worldwide, perpetual, irrevocable, royalty-free, sublicensable (through multiple tiers) right to exercise any rights you have in the Member Information and Media, and otherwise to make use of the Member Information and Media (including publishing, disseminating, broadcasting, manipulating, reproducing, editing, translating, performing, modifying, or displaying any part of the Member Information) and/or Media alone or as part of other work in any form, media, or technology whether now new known or hereafter developed, to enable DPChallenge.com to continue the specific operation or marketing of the site.
How many people actuallly read this stuff?
How few of those realise what they're giving away?