LibraryThing Google group
There’s some discussion in the LibraryThing Google group by people combining manifestations into works, and combining other things, such as variations of Cervantes’ name to gather all the versions of Don Quixote together. Other things are discussed on the list, of course, but if you want to listen in on people FRBRizing a catalogue, you can do it there.
And don’t miss this by Steve Oberg, at Family Man Librarian: LibraryThing and Cataloging Nirvana, er, FRBR, which also points to the Google group. I haven’t tried combining a work yet but when I do I’ll grab some screenshots.