These are the new rules for being polite in a world full of rude devices.
Long “@” conversations on Twitter bore other followers. Take them to Twitter’s Direct Message (DM) or send an e-mail.
Don’t use cell phones in a waiting room, checkout line, restaurant, train, or (heaven forbid!) bathroom stall.
When instant-messaging, always ask if now is a good time to chat.
It’s OK to piggyback on a neighbor’s free Wi-Fi as long as you don’t hog it and realize it’s not secure.
RSVP to legitimate online invitations promptly.
Things not to do when e-mailing: “shout” in all caps, use colored fonts or clip-art emoticons, attach large files, forward an e-mail (unless appropriate).
You can e-mail thank-yous for party invitations and birthday gifts given in person as long as you send each of them separately. (No cc’s.) For mailed gifts, letters of recommendation, and wedding presents, a written note is still preferable.
Work e-mails can be sent anytime, but business texts should be restricted to one hour before the start of the workday to two hours after it ends, according to The Modern Gentleman.
It’s OK (and even advisable) to follow your boss on Twitter, but you shouldn’t try to friend him on Facebook. Friends implies equivalency; followers, not so.