These PDF books can be downloaded and even printed (unlike their other Google Books), depending on the country you're currently in (a factor of the public-domain issue). Obviously, these downloaded books should be for personal use only.
Readers can find the books by choosing the "Full view books" option on the Google Book Search home page before they activate their search. Once they have chosen a book from the results page, a download button is clearly visible on the top-right corner of the page.
Using Google Book Search, you can find The Free Library and many other extraordinary old books, such as:
* Ferriar's The Bibliomania
* A futurist from 1881's 1931: A Glance at the Twentieth Century
* Aesop's Fables
* Shakespeare's Hamlet
* Abbott's Flatland
* Hugo's Marion De Lorme
* Dunant's Eine Erinnerung an Solferino
* BolÃvar's Proclamas
* Dante's Inferno
So is this a good thing or not... or neither - just another step in information technology's evolution?