The process of indexing Amazon book content is underway; that is, just as already happens with Google Books, it is possible during a search to find strings and keywords even at the text content level and not just in the title as was the case until recently.
Limitations:
- not on Amazon.it, especially on fr and uk
- does not yet include the entire available catalog
this is why I wrote "or almost".
It seems to me a useful and noteworthy thing