[GeoffR]

A nice feature would be to display the word count for a book in the library listing and/or on the book's details page. Once that feature was implemented, a further nice feature would be to provide a sort-by-word-count option as well as (or instead of) the current sort-by-file-size option.

I think for ebooks a word count is much more useful than a page count or file size, and from what I can see the current firmware already computes a word count of each chapter of kepubs for use in calculating the chapter progress, so it should not require much extra work to display a total for the book.

Word counts for sideloaded books would need to be computed on the device, and for performance reasons the result might be an approximation only. But as an enhancement for kepub books bought from Kobo an exact computation could be done in advance and stored on the server. This way the information could be available while browsing the bookstore from the device or the website, which might help sell ebooks even to those customers who don't have a Kobo device.