Google offered to let its rivals become resellers of the millions of books it is digitizing as part of its controversial Google Book Search project, but an Amazon executive immediately rejected the idea of becoming Google’s affiliate.
Rich Results is the latest in a series of smaller front-end tweaks that have been matched by backend improvements. Now, the book search algorithm takes into account more than 100 "signals," individual data categories that Google statistically integrates to rank your results. When you search for a book, Google Books doesn't just look at word frequency or how closely your query matches the title of a book. They now take into account web search frequency, recent book sales, the number of libraries that hold the title, and how often an older book has been reprinted.
It should be the world's greatest scholarly resource, but some claim that Google Book Search's many huge - and often hilarious - errors raise major questions about its value to serious researchers.