THE GAIN OF WRITING STORIES AND eBook?
I can advise that right now, particularly among younger writers for Twitter and blog or website for easy reading and thereby attract huge traffic. The higher number of people visiting the site or page the more the traffic margin.
Build a quality content that would make visitors always come and come to the website or page, the common opinion is in favor of short stories, eBook with uncommon factual details.
However, as a writer who is improving and growing, the point is not to have the most readers, but to produce the best writing you can which people would learn and give you the winning edge for huge traffics.
For me writing a short story is a powerful thing. You can write one all at once or in a few days later. So it is much handier than a novel in terms of time and income you might gain overtime.
EXAMPLES OF WHAT YOU CAN WRITE ON:
Content for website
People are always looking for new ideas, nonexistence things that they could bring into reality for huge returns.
The persons with the biggest visitors across the world wrote what were very rare and the things that would add value to humanity.
Think of one, come up with it. We Always Learn magazine is a website that has been affecting lives in positive ways. Google.com search engine adds value to me, Amazon.com is helping publishers world to fulfill their goals.
Source/Further Study/Reference: www.successconsciousness.com