You have probably taken a short look at our Terms and Conditions, but if not, please keep in mind:
We are a German company and thereby have quite a bit of freedom concerning what art you are allowed to show. Even so: ultimately it is you who is fully responsible for all legal implications of your uploaded artworks. Please keep copyright laws and legal limits concerning pornography, violence, etc., in mind.
If you are in doubt, please contact us or a lawyer.