Want to make a filter for your gmail? Want to make it so you know exactly where you signed up from that you’re getting this email? Well try this: If you again had the username google, you could add a plus sign (+) to the end and add whatever you want!

• Example: google+playboy.com@gmail.com.

This will remind you when you get spam that you did sign up to playboy or whatever site using that email address. Very helpful way to search for emails if you are looking for a specific one, or set of emails, just use this trick!