Open library, a non-profit Internet Archive, is now up and running in beta, which can be found at: http://openlibrary.org/
Basically, they are trying to scan (every) books (with permission) and have it open to the public. It's a great project to get and store books into a digital domain for preservation.
The content is wiki-editable, so if there is content that is wrong or missing, like the format, length, table of contents, etc.. this can be fixed. Currently they have over 13.5 million books, making a large digital library the size of 13.5 peta-bytes!!!
I did a "scanned books only" search on Mark Twain and found his auto-biography. The images are real nice and I like the animated page turning.
What is also nice, is that they did a OCR scan, which means that we can also do a search on the book. I decided to do a search for "Elmira".
The highlight text of my search word can be found through out the book with yellow tabs as short cuts to the other pages.
Take a look at the site, what do you think of it?