Gmail Controlling Junk Mail

This site explains how you can add a plus sign '+' along with a string to your gmail address which will still be delivered to you, but will allow you to filter out that information later on.

For example:

stocks29+test@gmail.com


This will still be delivered to by gmail account, but now I can create a filter based on the To: line of the email. This will allow me to control junk messages that arrive in the inbox from signup sites and also allow me to see who is spamming me.