Keep in mind he doesn't always get paid by those ad companies, because there are so many page views they sometimes think he's cheating the system, even though he's not.
Also, don't forget that he has to pay for servers, and the ones this site runs on are actually incredibly expensive, so Sythe is usually not making that much, if anything at all.
I've always wanted to make a site w/ ads. I know how to make sites and work AdSense and all, the only problem: Getting the traffic. How Sythe did it is beyond me. I still don't know how to do it.