The 50,000ft overview: Because you're surfing on the site, we can infer your movie taste. Now we're distilling that down anonymized on a user level and with the help of modern ad technology (the one where the shoe you already bought follows you mercilessly through the internet for weeks), we'll show you trailers before your Youtube videos or in your Facebook timeline - of upcoming movies you'd actually want to see (instead of the shoe you don't). That way, movie studios can get people interested in new releases far cheaper and measurably more effective than before.
If you're asking if you can do that to monetize your website: Probably not (but you're welcome to try, it's fun). We've got a team of 15 people just dedicated to that part.