Put your library on line with LibraryThing. Just put in a title, author, or ISBN number and Librarything adds it to your collection and fills in the details. This is a site that lets people create detailed online book catalogs, learn about the collections of other members, discover shared favorites and autogenerate recommendations. The New York Times has a good article on LibraryThing.
Still too much of a bother? How about scanning your book ISBN in with a $10 device in Readerware?
The easiest, fastest way to catalog your books, music and videos. [They say] nothing else comes close.You can pick up a CueCat for $10 on eBay that can read the ISBN codes off the back of books for input or Readerware will throw one in free when you buy their combination software bundle for audio, video and books.
Have a large collection? The unique Readerware auto-catalog feature lets you feed in a list of ISBNs, UPCs or barcode scans. Readerware then does the rest, automatically searching the web and cataloging your books, music and videos. Readerware can merge information from multiple web sites to build the most complete database possible, with cover art. Automatically and effortlessly.
It sounds like the Clear Lake SFF Book Group is going with lifetime memberships to LibraryThing for $25 but I am also tempted by Readerware.
CueCat can also be used with LibraryThing and the lower price overall for membership plus CueCat might tip the decision their way.
I have a CueCat I received with Wired Magazine years ago but can't find it now.