What makes Habra.

We with a friend argued on what Habra earns. I tell him that he places ads on the page. But there are not so many announcements there are only three, and every fourth announcement that you can place an ad in Habré (forgive me such a tophalogy). So he says that the submission of ads on Habré is not in demand. Maybe they certainly take the price per ad, but this is also not profitable. So on what Habra earns, If they are certainly not altruistic. Help me prove to him that the ads are profitable. And win your $ 100.