Tell HN: Reverse lookup someone with the svbtle signup form

So the other day my gf asked me to create a svbtle account for her. I went to https://svbtle.com/signup and typed in her email address and got the rest of the form autofilled with her real Name, Lastname, Bio and Twitter handler.

So I started to try random email addresses from my inbox and most of the times I got those people info.

Nothing crazy I know, but I had fun playing with it.