Our goal with Movie Critic is to license it, as a system, to be used in other web sites that want to involve users in rating activities or in making recommendations. It is also in some ways, to order things in a space, within a collection unit, where people can tell you what they like and you know more on what to present to them in that system. But, it is actually a pretty broad domain, Movie Critic, in its current app, is a narrow slice of that domain, which can include anything from books to retail applications. It is fairly broad. I think that each domain has its own problem set you have to deal with.
Wines are different than movies.
You need a different strategy to be able to use collaborative filtering in that space. Similar to movies, people can recall what they have read and express an opinion. There are more books published every year than movies made. One of the things that makes Movie Critic go forward is, we feel for the most part, people are cognizant of categories regarding the kinds of movies they enjoy. When you have lots and lots of items, like a million albums and books, something like collective filtering works better when you are able to create a more consistent set of items in the domain.