Shelley I am a bit surprised that your question hasn't gotten any feedback. It's a wonderful idea. My thoughts: scan books that you yourself would want to read. Any of the topics you mention would be fine. That's how a diversified collection is built not only to meet the needs of the current users but also those of future ones and current ones as are needs change. What might not interest me today may be just what I might want or need to read next January, in 2006, whatever. And, yes, I, if it were me, would concentrate on non-fiction as fiction seems well covered. And if I were going to do fiction, I'd look at series and see which ones were missing from the BookShare collection. I don't scan; but if I did, that's how I'd approach it.