The idea behind Adbrite is that people tend to ask popular sites to advertise their links.
You`ve probably had that to happen to you.Instead of asking for a link in return though,you could ask for money.
Adbrite is clearing house for sites that want to sell advertising space on their pages.

For advertisers,The advantage over Google Adsense is that they know exactly where their ads are appering and for exactly how much money each time.

This program similar to other ppc network that you will get pay when visitor click the ads displayed on your site.The point is traffic how much traffic you build that equal with your income ,people come and like your site that make you produce money per click they act.
Publisher get to set your own ad rates, and you have the right to approve or reject every ad before its placed on your site.That gives you the power to choose your ads and your price instead of relying on whatever google gives you.
You could get high income by approve the highest ad rate for linking on your site.And remmeber that they are not compatible with google adsense,more about adbrite