Tip: Infinite Gmail addresses
If you have a Gmail account you can actually modify that address to have tons of Gmail addresses.
How it works is that you can insert any number of dots, anywhere in your user name. So if your e-mail is: email@example.com you can have any of the following e-mail addresses.
You can also add a + after the user name like so:
This tip has been covered by a few other websites. Here’s to sharing. *cheers*