Most people don't know. Or if they know, they don't understand the implications. As Computer Scientists, part of pur whole shtick is to try to spread that lnowledge far and wide. Most, I hazard, spend precious little time on that particular responsibility.
>>salawa+(OP)
Most people think Facebook secretly records all their conversations because their ad tracking is just that good. They don't know the root cause but they absolutely do understand the implications.