I think there is a ton of potential use cases. Eventually I want to give the users full control over the page style, or possible offer different page templates. This will allow anyone to publish a totally customizable webpage in minutes.
While there are no ads now, monetization will come from advertising in the future. Or, possibly a small charge per page to have advertisement removed. This could be purchasable by either the author, or a reader.
We'll see where it goes.