So, I've received permission to photograph someone - what factors should I take into account as to whether it's ok to upload such photos onto the internet?
In my particular case, it's two photos of me and a maiko (apprentice geisha), and one of a maiko dancing, taken during dinner with them. The photos of me with each maiko was a standard part of the dinner (all of the tourists got a photo taken with them), and I assume that others took photos while they were dancing. I suspect that hundreds of people who've had dinner at the same place with the same maikos would have uploaded their photos, but I'm asking to be on the safe side.
I'm planning on asking about this particular case in a geisha-specific forum, but I'm also asking for future reference.