The idea of this company is to connect parked-domain-owners with advertisers that are specifically linked to those domain names, and therefore maximize the revenue generated by pay-per-click, as the people that end up clicking the banner directing to some site were looking for something somewhat related to what that search first produced, for instance, if you have a domain parked under the name frenchbrioche.com, and have a banner advertising the sale of French cookbooks, the users of your site are probably going to click into that, as opposed to a banner offering smileys and wallpapers, that would probably send them back to a search engine and rethink their search terms.
The process is very simple: you have to create an account and declare your parked domains, select a category in which it falls (electronics, fast food chains, fine retail store brands, furniture, etc.) and after that you get to select the banners or ads that will be on your site. As a registered member you will be contacted by an account manager who will help you with all you needs, and hopefully explain some stuff out, as the page is not overly explicit in how it works. 
