The database for the demo is "TINY" (2-4k titles) because it's a demo, rather than a service. Also, the demo is about 2yrs old now and almost no resources have been allotted to update it since then - generally, we have more important concerns, like... launching full-featured recommendation service.
I can certainly see the benefit that a librarian would glean from this sort of technology. If I were you, I would check back in a month or so to see what we're up to. If I weren't you, I would check back to see what we're up to
Keep in touch!