the benefit of a tool like this is to expose you to things that you might want to explore, rather than telling you what you already know.
It definitely told me what I already know, but it and the discussion here started me thinking about whether something like this tool could be specifically targeted in a way that would be more helpful.
For instance, I could see a Hunch for LAK11 and other MOOCs to help me initially navigate the nonlocalized blogs, tweets, forum discussions, and so on in these experiences. Then it could learn about me by what I choose to respond to, which course readings I've accessed, which Elluminate sessions I've listened to (and whether live or recorded).
Also, I had no problem accessing Hunch without a Twitter or Facebook login; you don't have to provide that information.