Andrew Steel searched Google for the definition of [what is guest blogging] and the answer Google's Knowledge Graph returned was from a parked domain site named moneyonlinemaking.com. I kid you not.
I tested this myself and the result came up when in incognito mode:
When you click through, you are taken to a parked domain page with ads and the option to buy the domain name.
Andrew posted this on Twitter and felt it was comical enough to share. The definition of guest blogging, right above the first Google result from Google's spam fighter, Matt Cutts, is a parked domain blog with content that doesn't even reflect the answer when you click through.
Is it a form of cloaking? User agent detection? Or just that the content was removed a while back and Google has not caught up?
Forum discussion at Twitter.