Show your sites to millions of internet surfers through various traffic exchanges. There are two(2) types : Manual Surfing and Autosurfing. Most of them are free to join with upgrade options for more benefits. Just make sure to follow each exchange's rules on what kind of sites are allowed to be entered into rotation. Usually, the requirements are stated in the Frequently Asked Questions (FAQs) page of each program. But if you are still unsure, you can just contact the administrator/program owner through the site's contact link.
The following are some of my favorite traffic exchanges :
