I think it's a pretty good idea. It'd be easy to come up with articles that are very clearly about politics/current events or otherwise quite off topic, yet 'hot topics'. Let's see: Occupy Wall Street, Republican primaries, Drug Legalization would all be ideal targets.

If nothing else, it'd be very easy to run as an experiment to see if there's anything to be seen about how articles like those get voted up and / or flagged, by who, and whether actually utilizing the honeypot data could be put to good use.