Whenever there’s this discussion on HN, someone usually points out that can sometimes be a bother, especially when giving out the email in person, because people don’t really understand how email addresses works and ask “how did you get that email” or think you’re impersonating the service, or something similar.
I guess a solution might be to add the details sneakily. E.g. instead of linkedin@hnrobert42.com, saying robert_lkdn@hnrobert42.com