Heal Your Posture is a company based out of Orange County, CA that specializes in recording and publishing videos that users can sign up for subscriptions to watch.
The owner of the site records videos demonstrating things like proper posture, then uploads them and promotes them on social networks, mailing lists, and by word of mouth. Clients then come to her site and choose which video they'd like to purchase then go through the process of signing up and paying for the videos via paypal. At the end of the subscription period, they're offered the chance to re-purchase the video or buy a subscription to a new video.
The owner of the site has the ability to easily log in to the back-end and update any information about any of the videos, see her customers' information, and see video information.