... send mass e-mails with a detailed description of every position, time of orgasm(s), transcript of dirty talk, etc in a power point presentation.
To be fair, for a lot of people it is. I suspect answers will vary depending on age.
I don't. I haven't had casual sex in 11 years or so, though. I'd tell my friends if I was seeing someone, and if I'm seeing someone, I'm having sex with them, so it's usually pretty obvious. But I'm not going to tell all my mates "got laid last night". I don't think they'd care.
(M/38 for what it's worth).
No, but they can usually guess by my grin and high-pitched, girlish laughter.