Tip #1. Every Gmail ID that you have is actually two separate IDs in one. For example; if your Gmail ID is email@example.com, mails sent to either firstname.lastname@example.org and email@example.com will reach you. There is a usefulness that you can derive from this. Say you want to use just one email ID for all purposes: you can give firstname.lastname@example.org to all your friends and use email@example.com to register on websites, post on forums or place on a blog. Then you can create a filter; to deliver emails sent to gmail.com to the inbox and the emails send to googlemail.com to a separate folder.
Tip #2. Chances are that spam is not a really big problem with your Gmail ID. But if you’ve been careless and given away your ID to all and sundry, there is a little trick called ‘Gmail Plus IDs’ that you can use to nab the culprit who’s given away your ID. The theory is this; if your email ID is firstname.lastname@example.org, all email sent to email@example.com will also be delivered to your inbox. Now this is the sneaky part. Suppose you need to register at http://www.thinkgeek.com, put down your email ID as firstname.lastname@example.org. Similarly, if you have to register on incrediblehulk.marvel.com, put down your email ID as email@example.com. Check your spam mail once in a while. If you get spam mail addressed to firstname.lastname@example.org, you’ll know who gave away your email ID. What you do with that info is up to you.
If you still don’t have a Gmail account, click on the Image below.