It seems that there are lots of contradicting rules and the haphazard manner is evident in which the TravelTales' "Advocacy Campaign" contest mechanics was drafted, please note the following clause:
7. By entering, you represent and warrant and agree that:
- You retain ownership of the Entry(ies) you submit, however, by entering you, on behalf of yourself and any Third Party Participants, grant Contest Entities and any organizations affiliated with the sponsorship, fulfillment, administration, prize support, advertisement or promotion of the Contest, the perpetual, fully-paid, irrevocable, non-exclusive license to publish, reproduce, prepare derivative works of, distribute, display, exhibit, transmit, broadcast, televise, digitize, otherwise use, and permit others to use and perform throughout the world the photograph and Entry in any manner, form, or format now or hereinafter created, including on the Internet, and for any purpose, including, but not limited to, advertising or promotion of Contest Entities and Contest all without further consent from or payment to you, including those Entry(ies) which were not selected.
- By submitting an Entry, each entrant understands and grants to TravelTales, Inc. permission for his/her Entry to be posted on traveltalesinc.com in perpetuity throughout the world for viewing by visitors to the Website. Contest Entities are not responsible for any unauthorized third party use of any Entry. Entries will not be acknowledged and will not be received or held “in confidence” and a submission does not create a confidential relationship or obligation of secrecy between you and TravelTales, Inc. or any of its affiliates.
- By submitting an Entry, entrant warrants and represents that he/she consents to the submission and use of the Entry in the Contest, and to its posting on traveltalesinc.com.
So join at your own risk. Or you might want to read Introduction to Rights and Licensing.