Originally posted by beholder3 But then flickr is oldschool. We dont have stats on facebook, instagram and whatever the kids use these days.
More importantly flickr might be regionally centered on US or western countries. I bet there are huge Indian, Russian, Chinese etc. sites which can hold trillions of images.
At present it's the best info available and at least it's info....as opposed to the comment above that is speculation. Use what you have until you get something better. But there is a certain class of folks who seem to think being able to criticize evidence and suggest weaknesses means their opinion is better than actual evidence. When all it really means is you might be able to contradict the evidence with better evidence, but given the overall workings of things, its more likely that additional evidence will confirm the original.
It's very rare that data collected on the scale flickr does is completely unreliable. There are thousands of people posting on flickr everyday. In terms of available information, it's as far as I can tell the only source. You can argue that the flickr demographic is not representative, but making the argument doesn't make it true that a different demographic would produce different results. That might be true, but it needs to be documented to accepted as truth. In the meantime, it's speculation, where as the flickr numbers are evidence.
The only thing that supersedes evidence, is better evidence.
"My opinion is better than evidence" is anti-science.