I've sent pics to some girls who requested it on Imgur/Reddit before, genital pic swapping is eerily common on those sites. I've also been on the receiving end of some sexts from a girl out west who was self-admitted as terribly lonely and wanted some attention I think. People are weird.
I've never done anything self-identifying nor included my face in any pics, that'd be weird.
It's kind of fun at first but after a few times the novelty wears off.