I am currently looking into Issuu which ia a magazine-alike ebook builder and host. http://issuu.com/ - there are many examples and as a member you can pick your samples for a personal book shelf. It is said to allow all sorts of formatted text, but it was not possble to upload a mac-made .key (like PPT) presentation). I'll see if I can save the stuff in a workable format and upload it to Issuu. Anyone knows this tool?
Writing an e-book about e-books for fun and no profit: Feb 1-14, 2012
Free ebook sampler preview
Breaking the Page: Preview Edition
By Peter Meyers
Publisher: O'Reilly Media
Released: December 2011
You have to put it in the cart and sign up for an account, but they do not require a credit card to download the preview. I don't know how long it will be available. Three chapters are included according to the write up.
If you have a kindle you can download a version from Amazon also