Well, after checking the first 10000 or so I felt I'd reached the point of seriously diminishing returns, in terms of quantity, quality, and size, so here are the next group I saved, still (to use a favorite crossword answer) an "olio," encompassing WTFs (1-3), flashes inadvertent or not (4-7), and dippy/beachy (8-10). Ones that are strictly upskirt I've posted to that forum (
https://forum.oneclickchicks.com/showthread.php?t=94857 ). Thanks, photosight.ru contributors! P.S. Since my main quibble with these is that they could be larger, if anyone knows how to get biggest versions of these, I'd love to know too...