Self publishing has opened doors for writers, no question. It has also made the shopper's job that much more a research project than a leisurely browsing of titles.
When I buy a book from Avon, I can almost promise I'll enjoy the read. When I download a $0.99 cent ebook from an indie publisher, I can almost promise that there will be some major format/typo problems that will push me right out of the story. There will also be those side tracking bits than an editor would have asked the writer to cut because they're irrelevant. There will be word repetition to a point that my eyes find that word on the page before reading the first sentence. This is not an absolute, but it has happened more often than not.
I love to lose myself in a book. Life is crazy and I really cherish moments of escape. I hate it when reading something I paid for becomes an automatic critique/editing session (hard to turn the writer off). I am not escaping when the book I looked forward too turns out to be historical only in that women wore dresses of some sort or McDonald's is misspelled.
I see more stringent categorizing in the future for self published books, but I worry that they will be based on who paid for a certain service or level of marketing and who did not rather than what books are well written.
When I think of the excessive back story, horrible cliches, genre inconsistency, and history-teacheresque aspects of my first book and my certainty that it was a masterpiece I worry over newbie writers who just churn out their whatever and sell it. There's no more learning curve for them to help them advance as writers. Write. Publish. Done. Rejection and research has made me a much better writer today than I was when I started. If I had just self published then, I would have been crushed by poor reviews and probably given up.
It's unfortunate that experienced writers who know their craft and opted to go indie rather than jump through hoops for a publisher or losing $ to an agent are lumped in with all the crap out there.
What can be done to protect the ebook buyer from the ebook saturation of bad books?