We only see the luckiest pictures, the others are deeply buried in the internet.
"All events seem entirely loose and separate. One event follows another; but we never can observe any tie between them. They seem conjoined, but never connected."
David Hume
A picture becomes great by not accepting normal standards, and pushing the envelope, so to speak, in order to innovate.
Wolf Vostell : No Art medium is logically preferable to any other, beauty is another altogether.
Magic has long been associated with experimental science.
Painting understood not as an object but rather as a set of choices, contrary to the rules of parcimony.
People aren't looking for sites with great art in a never-ending quest for discoveries. They're looking for sites with smiling pictures to make them happy.