Kristine Munroe-Mahoney reports that if you give Clear Conscience Cafe in Central Square a less-than-glowing review on Yelp, the owner and his minions will come after you, via nasty e-mail messages:
I have gotten contacted by business owners in response to a negative Yelp review before, but usually they’re asking for my opinion on how they can better serve me or apologizing for any bad experience I've had. I think that's wonderful. But sending out nasty messages to people who don't like their service? Highly inappropriate.