Have you ever tried to send a Gmail message without a story body (you know the kind that says "I'll be right there!") and received a pop-up that prompts you to add text to the body of the email?
The Official Gmail Blog taught me you can add "EOM" or "(EOM)" at the end of the subject line (that's short for End of Message), and Gmail will silently send the message without the unnecessary prompt. Of course, you could just send a text message, but it's a helpful tip nonetheless.
As long as Gmail keeps the Mail Goggles prompts coming I'll be a happy Googler.