Did I tell you how I discovered e-books?
It was the Baen free library. I was just surfing the net, idly clicking around for some interesting news about Fantasy and Science Fiction books. And then I stumbled upon the library. Free books, more than a dozen of them. Paradise for a reader. Mind you, I didn't have an e-book-reader then, didn't even hear of the possibility of an e-book-reader before. I started to read the first book online, discovered that it was possible to get a download – a text file –, and harvested book after book.
Free e-books.
A splendid idea, from my point of view. Afternoons, evenings, days, weeks of reading fun.
A splendid idea, from Baen's point of view, too, as I started to buy other books of their authors soon afterwards.
And then I read that this was exactly the point of their whole free library. Marketing, pure marketing. Use freebies for advertising. And it works. Worked for me, and, as they wrote on their website, worked for them as well. A sure win-win-situation.
That kind of marketing I will recommend anytime.
That's the reason I sometimes write flash fiction and publish it on my blog for free.