With Late Night with David Letterman off the air, we assume that the top-ten format is up for grabs, and because we care about your ~social media presence~ here are 10 things that should never be a part of your company’s Twitter program.

1. Typos/Grammatical errors
2. Making light of Memorial Day, Veterans Day, or any other somber, reflective holiday
3. Misusing modern slang
   See: YOLO
4. Obviously purchasing followers from a shady vendor
   We see you @00312AY120
5. Following and/or interacting with inappropriate accounts
   You know it when you see it
6. Long, ugly links — Bitly is your friend!
7. Feeding the trolls
8. Biting satire
   That Onion article will do just fine without your official endorsement
9. Random sports tweeting
   Hometown heroes/national teams or nothing

And finally…

10. Any T-Swift criticism
    Keep it to yourself, Buzz Killington

Thank you, happy Tweeting!