You can use dots (periods) anywhere in your Gmail username(samengland.com)
samengland.com
You can use dots (periods) anywhere in your Gmail username
http://samengland.com/you-can-use-dots-anywhere-in-your-gmail-username-as-many-as-you-want/
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If your email address is N characters, there are actually 2^N possible email addresses by just adding dots in different places (due to the binomial series).