Despite its breadth, the SITB collection is idiosyncratic and irregular.
Searching SITB with any systematic intent is frustrating, because it's hard to determine just what's taking place.
SITB books are displayed along with others and are distinguished by a logo.
Each SITB book record displays a hit list of query occurrences.
Displaying significant portions of full text for free is a controversial point for SITB's participating publishers.
Publishers of reference books, including cookbooks, have been justifiably wary of SITB. Since reference and cookbook entries are typically short, it's possible for Amazon account holders to extensively use these works for free.
I'm betting that SITB will, in balance, benefit the sellers.
Beyond SITB's bright promise as a retailing device, it has enormous and unexpected importance as a reference service.
SITB has the potential to push this buyers'-guide-as-reference-work model to an entirely new level.
Consider that SITB's collection is three-times larger than netLibrary's and four-times larger than ebrary's.