Info: National Geographic photo contest scam

National Geographic is up to their usual tricks, running a contest that deprives all entrants of any rights to their own photographs:

By submitting a photograph for consideration... you grant to National Geographic Society and its subsidiaries and licensees (the "NGS") a royalty-free, worldwide, perpetual license to display, distribute and reproduce the Photograph, in whole or in part, in any medium now existing or subsequently developed for editorial purposes without further review or participation from you.

For more info about other photo (and poetry) scams, see my previous blog entry on this topic.