SAN FRANCISCO — Signs you’re an old fogey: You still watch movies on a VCR, listen to vinyl records and shoot photos on film.

And you enjoy using e-mail.

Young people, of course, much prefer online chats and text messages. These have been on the rise for years but are now threatening to eclipse e-mail, much as they have already superseded phone calls.

Major Internet companies like Facebook are responding with message services that are focused on immediate gratification.

The problem with e-mail, young people say, is that it involves a boringly long process of signing into an account, typing out a subject line and then sending a message that might not be received or answered for hours. And sign-offs like “sincerely” — seriously?