One of the things that Library Catalogues do really badly is ranking search results. In fact, I don't know of any out of the box ILS OPACs that even offer relevancy ranking as part of their search. Even the add-on discovery services like Innovative Interfaces Encore and Sirsi Dynix Enterprise that do offer relevancy ranking base it predominantly on how many times and where keywords appear in a record.
It seems to me that collecting data about which items in your collection get used most and the kind of 'he who used that also used this' data that powers sites like Amazon and LibraryThing could greatly improve the discovery environment of your library catalogue.
So I was interested enough in the report from the JISC & SCONUL Library Management Systems Study to post about it on the RISG New Technologies blog.
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