Hey guys,
DigitalReading Search is also embeddable to any webpage
- though you'd have to contact me first.
I used Google's AJAX Search to do the embedding - which is way better than the search box that ebooksearchr is using.
Check it out on the
More tab.
The advantage of this approach is that you can combine search results from the custom search engine with results from Google's own book search.
I suggest ebooksearchr implements the same!