16. Unsubscribe
Many of us have unsubscribed to newsletters or services before. Ever get that confirmation that you’ve unsubscribed right after? Yes, it’s a harmless email… but we know what we’re doing! We unsubscribed from you and your service for a reason. We don’t want to receive any more emails.

This is one of those really small annoyances that bother many for a second before we all move on with our lives, but Dude with a Sign is correct in his analysis yet again. We really don’t need those confirmation emails, people. It’s a small thing, but it adds up.