I've started a LibraryThing account for the parish library that I'm responsible for. Please check out our growing catalog. Please consider writing reviews for any of the books you've read.
LibraryThing has a nice import function that allows you to upload a list of ISBNs and have matching records added to your catalog. I still have fair amount of work to do. There are 917 items cataloged and LibraryThing recognized 540 unique items.