Social Media Fan Page Interest Evaluator/scraper

I am wanting a tool that can scan the interests of any (admin or not) fan page followers. Interests as far as pages they like, or listed interests in books/movies/or other interests on their profile, etc. I don't want names/emails or anything like that. I just want the interests.

Is there something that gives me this sort of insight? I want to get to know my following to provide the most valuable content.