500px gives 70% to contributors.
Is it a enough reson for you to upload files to 500px? I mean Exclusive?
but ... as a free account, I can upload 20 files per week. It is so crap!

I have some exclusive material with them. Mainly artsy stuff I do for myself. This material is not included in the stock output routine and the numbers, so it is easy, but as soon as I got just one sale I will push more into that direction.