Slight tangent: A lot of people might not know that periods in the first half of a gmail address actually get ignored when relaying. They're only there visually

Slight tangent: A lot of people might not know that periods in the first half of a gmail address actually get ignored when relaying. They're only there visually. Some services don't check for this and you can register multiple accounts with u.ser@gmail.com, us.er@gmail.com, use.r@gmail.com which all get forwarded to user@gmail.com.