which ad networks pay the most for hits on your site?

[Randy]

Most companies will not pay you just for people visiting your site. There is no point in it for them because they get no benefit unless someone clicks on their ad to goes to their site.

Now there are always exceptions though and in this case the only exception I can see is a major name brand like Toyota or Nike or some company like that paying just for ad space on your website. But trust me, in order for that to happen you need to have a very successful website that generates millions of visits a month. Then they will pay just to have their ad be exposed to your visitors. You can see this on MySpace, Facebook and many other popular social networking sites, or on topic specific sites like fashion or sports or electronic review sites.
But again this is rare unless you are a serious player in website traffic.