I use Delicious Library to catalogue them, shelf by shelf (I have the Microvision RoV Bluetooth barcode scanner they support), and a workflow to make this very

I use Delicious Library to catalogue them, shelf by shelf (I have the Microvision RoV Bluetooth barcode scanner they support), and a workflow to make this very efficient: select the shelf in DL, go to the shelf, scan all the ISBNs (the scanner has a memory), come back and watch as the barcodes are poured wirelessly into DL, looked up on Amazon for cover art and other metadata, and appear on the virtual bookshelf. Very satisfying.