With Fotopic, you are aware of this in their T&C's:-
1. For purposes of the TOS, "publicly accessible areas" of the Service are those accessible by the general public. By way of example, a publicly accessible area of the Service would include public Fotopic Galleries, Albums, Collections, Photographs and Message Boards.
2. With respect to Content you elect to post for inclusion in publicly accessible areas of Fotopic Galleries or that consists of photos or other graphics you elect to post to any other publicly accessible area of the Service, you grant Fotopic a world-wide, royalty free and non-exclusive licence to reproduce, modify, adapt and publish such Content on the Service solely for the purpose of displaying, distributing and promoting the specific Fotopic Service to which such Content was submitted, or, in the case of photos or graphics, solely for the purpose for which such photo or graphic was submitted to the Service. This licence exists only for as long as you elect to continue to include such Content on the Service and shall be terminated at the time you delete such Content from the Service.
3. With respect to all other Content you elect to post to other publicly accessible areas of the Service, you grant Fotopic the royalty-free, irrevocable, non-exclusive and fully sub-licensable right and licence to use, reproduce, modify, adapt, publish, translate, create derivative works from, distribute, perform and display such Content (in whole or part) worldwide and/or to incorporate it in other works in any form, media, or technology now known or later developed, in the course of providing and promoting the Service.
They can make money from your photos and not pay you!!!!!!!!!
Carl.