Authors can invite people into their content while producing it to get feedback on how to make it better, allow anyone to "subscribe" at any time, or wait until they have a "finished product". And they can make any changes, anytime - because it's their content.

The author also has 100% control on pricing. That means, for instance, they could give away their content for free as they develop and refine it, and then increase the price as the quality and quantity increases. It's a much more fluid, personal, and cost-effective process.

There is no comparable alternative, that helps you know who is consuming your content, build your fan base, create an engaging, multimedia experience, and gives you complete control over the publishing process.