Great until you need to give someone an email address in real life and awkwardness ensues.
Cashier: "What's your email?"
Me: "[email protected]"
Cashier: "No I meant YOUR email address."
Me: "Yeah [email protected]"
Cashier: "Oh do you work for Walmart???"
Me: "No see I set up my email so... oh nevermind, [email protected]"