FreeTrafficHere
Your Free Website Traffic Information
Free Traffic Ideas
Google Search
Surfing For Free Traffic
Social Sites Free Traffic
Your website can be listed in Google search, when your SEO is done properly and your website rankings are good.
You can join Traffic Exchanges and surf their listed websites.  You will earn credits that you can exchange for free hits (traffic) to you website.
Social bookmarking sites are another way to get free traffic.  You can bookmark your website on sites like Facebook and Twitter.
Put your mind to it and you will come up with your own ideas for free traffic to your websites!