[joe_g_young]

The Gmail domain will deliver email to an email address regardless of periods in the username. My email address is first name period middle initial period last name. I can a period between any letter, all letters or none and I can still receive it.

[bombcar]

Yeah, the story goes that very early on it let two people register joe.blow and joeblow.

[astrange]

PayPal let someone else add my Gmail address to their account, so I have to use a +paypal in my own account email.