Has anyone ever thought about using all of reddits porn subs for machine learning? There must be 10s (or even 100s) of thousand of images (kind of) neatly organized by gender, boob size, ass size, skin color, age, ...
Hate to seem harsh, but I felt it worth mentioning, since it's why I'm unable to give any more substantive feedback on the project.
Reddit's main issue is that you can only do one call (via OAuth) per second. I recommend using the new(ish) "thing" call where you can get up to 100 things at once, or alternatively rockets.cc, which occasionally falls apart but is pretty good