Just today I sold (right to use) one of my photos on this DB
I am not in the business professionally and I took it as "found" money. In the past I have given the right for free for inclusion on not-for-profit websites and the like.
So I suppose it depends on how you see your picture-taking. I take pictures to entertain myself. If I have one I like that would be appropriate to this DB
I submit it. Sometimes they attact attention and someone wants to use them, but that is just not the business I am in.
I don't think either my photography skills or my body of work is any threat to the livelyhood of any professional photographers here. If a customer wanted real, serious photography they would not come to me.
So whatever you can get?
Happiness is not seeing another trite Ste. Maarten photo all week long.