Traffic exchanges usually will work very well to bring you traffic
. That is, if you're satisfied with a whole bunch of people who visit your home page for three seconds or less and leave without doing anything...
But if you want visitors who actually do
something (buy your product, inquire about your service, sign up for your newsletter, whatever), they're terrible
. KimboJim's advice is a good place to start. There are plenty of ways to promote your website that will bring you real
visitors who are actually interested in what you offer.
Traffic exchanges, sadly, are not one of them.