The traffic trading service essentially works like this: You create a 'plug'. You upload a thumbnail and fill in the url of the page you want to sent traffic to. Next you copy the code for the trade widget and paste it onto your webpages. This code consists out of html code and JavaScript code that will create the clickable thumbnails on your site. PlugRush tracks how many visitors click on the thumbnails displayed on your site and displays your plug accordingly on other sites in the PlugRush network. You can look at it like a 'managed trade service'.

The traffic broker part is a lot like other brokers. You can buy and sell skimmed traffic (from the plugs), popunder traffic and mobile traffic.

For more information, check out their site.