I think we have a case of "steempathy": Three days ago I started playing a bit with photography myself, and I intend to make a mini-series of 7-8 beautiful themes that appear on Greek coins (numismatic art so to speak)... An example is here: https://steemit.com/photography/@alexgr/photography-greek-numismatics-pt2-the-wise-owl )

Anyway, my idea was to release the rights into the public domain, and I've written under my posts: "Copyright notice: I release these in the public domain, for use or edit, by anyone, for any reason, with no attribution required."

My rationale was that just as we take from pixabay, we could give something back to the Internet as well. And I've been thinking about how we could spread this into building a very good image repository over time, that provides the internet with good, free-to-use pictures - which would also help us, as a platform, to be self-reliant in the long-run. And you've now expressed this in the idea above. Nice :D