You ever get a magazine subscription – and sometimes read it? You still renew it you know . . . just in case.
Or maybe you get comics in a pull at a comic store. You buy them, and might even read them.
Or a book club.
Or . . .
Well you get the idea. We all have experience with subscriptions one way or another. However in an age of eMedia, DLC games, and the iPad-ness, think about what kind of subscriptions you're going to see.
I think we're going to see a lot more subscriptions in the future. Your business models, your publishing models, and your estimates on profitability are going to need to keep this in mind. If you're writer, an ePublisher, a game developer, this will be a factor.