When I first set up the catalogue we had truncated search switched on and found the results were hopeless. But even with it switched off, it picks up a lot of irrelevant records. One of the problems for us is that it searches the place of publication. Geography is a very important aspect of our collection, and searches are often done on place names. So someone looking for material about London for instance will be presented a huge list of items that were published in London. If it were possible to specify which fields were searched in an 'unfielded' search, we could probably eliminate a lot of the false positives. While it is sometimes useful to search on a place of publication, that's a very specific search, which should be done as an advanced search.