Wolfram Alpha's new tool is definitely an interesting window into how much you've shared with Facebook, if you care about that sort of thing. But, it can definitely be fooled. Even so, I was surprised at how much information the app garnered from what I've posted on Facebook.
To use Wolfram Alpha's Facebook report, go to www.wolframalpha.com, and in the search box input "Facebook report." You'll have to give the app permission to access your Facebook account, as well as set up a Wolfram Alpha account.
I found the process of generating a report a bit unwieldy (using Chrome) and after generating a first report had to clear out my cache to get subsequent ones. Even so, it's worth checking out.
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