Our network delivers millions of text based links and targeted banners each and every day. Any visitor that clicks on one of these links / banners are taken to one of our ad lists, which are set up similar to a Google search page.
When a visitor sees a link that they are interested in, they are taken to that advertiser site. If they sign up to your website then they count as 1 GSU.
Your campaign will run until you receive the amount of GSU you paid for. Any example of an AD running on our network can be viewed below.