I have changed the way my reading list appears. It now shows the cover of the book from Amazon. Thanks to Yaser for his technique of easily doing this. Also, thanks to Anders Jacobsen for how to do this using SSI instead of PHP and to Adam Kalsey for his MTAmazon plugin.
POSTSCRIPT: Do you think the page loads too slowly now? Are the book cover images of the right size? I am especially interested to hear from readers with dialup connections. Please let me know.