I might not like LibraryThing for a range of what I consider to be good, librarianly, search-and-organisation based reasons, but it isn't 'alf addictive. And useful - the different default collections, including 'wishlist' and 'read but unowned' neatly solve two problems: I don't really like keeping a wishlist on Amazon (I have pinko-liberal lentil-knitting views about what Amazon has done to local bookshops) and I like to keep a record of what I've read in libraries but am bad at doing so on paper (the notebook is never nearby when I want it). This new-found addiction is also driven in no small part by seeing what recommendations will appear when the collection is broader - at the moment a lot of suggested works are just further books in series that I already part own.
So without really meaning too, I'm up to 70-ish books now, and just by thinking about what I've got lying around at home. A methodical assault on the shelves might lead to the purchase of a life account. Not a lot to do with work in libraries, and a big ol' drain on my time. Oops.
Edited to add: I've just found the 'Local' tab, and it turns out that there's already an entry for the library in which I work. We've got some events coming up (as part of Open Cambridge), so I've added those. Every little publicity helps.