Facebook is a lot of different things to more than 750 million people, but being a movie rental platform is not usually the first thing you think about. However, as more people embrace mobile devices and cloud streaming, the demand for "on-demand" is only going to heat up. And Facebook is not planning to sit on the sidelines.

Currently there are agreements in place between Facebook and several major movie studios, including Warner and Miramax, to stream movies that you pay to rent through the social networking site. The selection right now from the studios is extremely limited, but the potential is enormous. 

Miramax has the largest selection right now, even though it is limited to only 20 titles. To check it out, all you have to do is head over the Miramax eXperience App on Facebook and like the page to get started. This is not a pure iOS app, but a web app hosted on a Facebook page.

Through the app, you can browse through the titles until you find one you like. Once you do, it will cost you 30 Facebook credits, or about $3. If you don't have any credits, you will be prompted to buy some immediately, and Facebook is more than happy to take your cash in several different ways, including your credit card, mobile phone, or PayPal. Movie rentals last for thirty days, but once you start watching you only have a 48 hour window to watch and re-watch the film. The move can be watched instantly through Facebook, your iPad, or Google TV. 

The Miramax eXperience App also includes a game that allows you to cast friends in various roles of Miramax movies and, as you play, you can unlock bonus content that’s not otherwise visible.

We know you Facebook users notoriously spend a lot of time on the social networking site, doing everything from reading news to chatting with friends to playing games. Most of your video watching consists of watching amateur clips uploaded by other users, or links to other web hosting sites like YouTube or Vimeo. It remains to be seen if you want to watch an entire feature film through the site and, more importantly, if you are willing to pay for it.

Adrian covers daily news as well as the weekly Law & Apple column for MacLife.com. You can follow him on Twitter, if you want to.