Well, after spending a couple minutes researching this site: There is nothing particularly "Kindle" about the site--other than the fact they are remarketing previous work in the an attempt to pick up sales to the now-PDF-supporting DX. This is actually a PDF library service, it is essentially the same thing as "World Public Library." http://www.worldlibrary.net/ A "free" subset of their offerings is available at: http://kindlelibrary.net/give-away.htm I happened to pick at random "Jules Verne Journey to the Centre of the Earth" where page 4 it talks elliptically about "Project Gutenberg" without ever actually saying whether or not this copy of the text was copied from there. I would think that even most DX owners will be unhappy reading fixed-format PDF E-Books unless they have no choice. The reason we tolerate PDF for technical articles is because we do not have a good way to convert the tables, formulas, graphs, etc to E-Book floating format. Certainly if I had a DX in my hand today and could not find a E-Book free-formatted copy of some obscure text in a couple minutes, then rather than paying my $8 a year then personally I would go to Google Books where I can get a PDF "photocopy" for free and it will probably be a first or second edition which personally I would find more interesting. Or I can get a free E-Book formatted copy via the Sony/Google free E-book site and in half a minute use Calibre to turn the Sony Format into a Kindle-formatted E-book -- assuming I am willing to tolerate all the scannos in the Google scans in the first place! PS: Personally I have no objection to seeing some college student's thumb show up in the middle of the books I'm reading unless it obscures the text.... ;-)