Right my friend @franyeligonzalez. I think they should also pay attention while selecting the topic. We should avoid such topics which are different for many users to participate. But if we have set such a topic then we should never expect the artistry/photography of the professional level. And discouragement like this comment is really bad. This will impart bad impact and users will be fearful while participating. Anyways, I hope that administration of this community will look into this thing.