I'm such a huge fan of fan fiction, to me it's a great way for readers to become writers. It's like putting the training wheels on for writing.
My approach with social media is to interact with the readers I already have. I do it mostly to procrastinate from my writing. It's an escape. It's the only socializing I get outside of my wife, and she gets sick of me.
Honestly, I don't think I'm a good promoter. I spend almost zero time or effort asking new readers to sample or purchase my work. That's not the job of the author. We should write our best material and leave it up to readers to spread the word.
I'd rather excite the imagination of a legion of readers and make pennies from each of them than hold off for a larger chunk of change from only a handful of fans.
One of the many things that surprised me about 'Wool' is how many of its fans don't consider themselves science fiction readers.
There are two competing philosophies in 'Wool': one is that people have to live under an iron thumb in order to survive, and the other one is that everyone should live completely freely and happily and everything will sort itself out.
Ever since I was twelve, I dreamed of being an author. I just never had the fortitude to see any of my stories through to completion. I would start a book, get a few chapters in, and grow bored or get distracted by something else.