Looks awesome! Very cool idea.

Edit: Awww, have to enter CC number to try it? I'm afraid I don't know you well enough.

Edit 2: Oh ok I just tried logging in and it worked. No idea why I was asked for my cc number?

Edit 3: Ok sorry I'm confused, this isn't a service I signed up for? I read that, got excited and went straight to 'sign up' at the bottom. I can now see it's a regex open source list. Still useful though, thank you!