SIPs

Amazon.com now lists Statistically Improbable Phrases (SIPs), for books which offer the "search inside" option. This means:

"Amazon.com's Statistically Improbable Phrases, or "SIPs", show you the interesting, distinctive, or unlikely phrases that occur in the text of books in Search Inside the Book. Our computers scan the text of all books in the Search Inside program. If they find a phrase that occurs a large number of times in a particular book relative to how many times it occurs across all Search Inside books, that phrase is a SIP in that book."

Best one so far: from Elizabeth Lowell's Where The Heart Is....

"rosy boa"

Yes. Really. ::snicker::