There was a recent article in Forbes, linked to at The Passive Voice:
Publishing Is Broken, We’re Drowning In Indie Books – And That’s A Good Thing
Some people are afraid that we'll have so many e-books we won't be able to find or get notice for good ones.
There are millions of print books. Many millions. How do good books get found?
There are millions of songs. How How do good songs get found?
Sure, traditional publishing will have to change its business model to survive, as have many industries in the modern age. This does not mean good books will go away. This does not mean we won't be able to find enough good books. It just means a different way for people to access books.
In publishing, the Joe Konrath site has a guest posting from a successful writer who capitalized on a fad.