Haven't seen this mentioned on MobileRead, so thought I'd post another success story.
I ran across a discussion
on MetaFilter about Hugh Howey and his little series of books titled Wool[1-4].
Hugh Howey was a self-published novelist of no real success. Until WOOL, that is - a 15,000 word "little throwaway story" he uploaded to Amazon's Kindle Marketplace one day and promptly forget about. The story he didn't blog, didn't tweet, and didn't even sell on his site hit #2 on the Kindle SciFi Bestseller list and "changed the course of e-books."
Hugh joins in on the discussion and the comments make for an interesting read. I picked up the first three, read the first one in an evening and nearly finished with #2. Good writing, interesting stories, good worldbuilding. Well worth the $0.99 price and if that's too steep, all the books are available as Prime library books for free. Nice to be able to support an author and still get quality stories.