Library Thing

How can you use LibraryThing for your library?
I was thinking it would be a cool tool for book groups to use. I am in a Mystery Book Club, it would be interesting to add all the books we have read over the years and see what type of recommendations come up. I plan on talking about this at our next meeting.

How else do you share booklists, etc. with library patrons? Would LibraryThing offer an alternative?
I know after playing with LibraryThing and I will recommend the site to many library patrons.