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Online social networking services accessible by means of downloadable mobile applications, the services allowing an individual or corporation to create a challenge that is promoted to users requesting the best photographs or videos of a designated request or task, upon which the users submit the best photographs or videos, and the best photographs or videos are determined and a prize is awarded to the winning user or users; Online social networking services in the field of allowing an individual or corporation to create a challenge that is promoted to users requesting the best photographs or videos of a designated request or task, upon which the users submit the best photographs or videos, and the best photographs or videos are determined and a prize is awarded to the winning user or users