Yeah, I meant "webmail" in the broadest possible sense. And it's even broader than that: anything that allows making anything public really: from forum comments

Yeah, I meant "webmail" in the broadest possible sense. And it's even broader than that: anything that allows making anything public really: from forum comments to Instagram to WordPress sites to Wikipedia. Remember that for about ten years there was a person who consistently and frequently inserting images of ceiling fans in random articles.