Pretty interesting stuff..
Personally I wasn't a big fan of recommenders that rely on explicit interaction with the end users simply because it may be too much work for them.
Hunch, on the other hand seems to frame questions in a much more entertaining manner, I could see my colleagues having fun while answering questions, and even after 20, they went ahead and answered a few more.
The whole process definitely makes me think again about how to go about approaching recommender systems...