can be a very good source of traffic to your website.
Traffic exchanges are sites where you submit your URL for traffic. To get traffic to your site, you need to browse other sites on the traffic exchange and remain on each site for a certain period of time. The number of times your site is displayed to other surfers depends on how many sites you have viewed
In my experience though the conversions from traffic exchange traffic is not as good as search engine traffic. Your sites are being displayed to people who are looking at it for the sole purpose of getting their site displayed.
If you have a really good offer though, you could convert some of the traffic
Word of Caution. Do not use traffic exchange if your site is monetized with adsense