Gmail tip
Cool thing I didn’t know about gmail.
“Gmail allows only one registration for any given username. Once you sign up for a username, nobody else can sign up for the same username, regardless of whether it contains extra periods or capital letters; those usernames belong to you. If you created yourusername@gmail.com, no one can ever register your.username@gmail.com, or Your.user.name@gmail.com. Because Gmail doesn’t recognize dots as characters within usernames, you can add or remove the dots from a Gmail address without changing the actual destination address; they’ll all go to your inbox, and only yours.”