Hi Steve,
that's exactly why we need a book rating/review site.
you would go into the "sci-fi" category and see what books are rated good, you'd find reviews and comments.
books stores like Connect.com will only categorize and suggest their own content.
this was leading me when I started working on the
ebookmark website
re:selling your books
did you try selling elsewhere, e.g. on Amazon/Mobipocket ?
is DRM important for you? (otherwise you could just sell them on your site)
do you expect to see more customers finding your book if you have it on Connect.com?
Sic.