Yelp isn't having a good Thursday. After posting mixed Q4 results Wednesday evening, shares were down more than 5.5% Thursday morning to $21.15.  While analysts like Doug Anmuth of J.P. Morgan were expecting $40.5 million in

Yelp announced today that it surpassed 100 million unique vistors on its site in January, marking the first time in Yelp history it has had that many uniques in a month. “That’s an all-time high