You (the general you) tell the world a lot of things that can be looked up via your email address. Most restaurants take reservations through a system that asks for your email address.

I was at a restaurant a while back and looked over at the hostess' iPad. It had my Twitter avatar on it. I never told them my Twitter handle, but it is associated with the email I used. Do public musings count as telling someone something?

Maybe the next restaurant you (the personal you) go to will look up your email address, find this post and just serve you food.