Yelp, the popular local review site, has just closed a $15 million dollar round led by DAG Ventures, with a valuation of $200 Million. Yelp says that they will be using the money to expand geographically, add onto their sales team, and establish a second office in New York City. This is Yelp’s fourth round of funding, and has now taken $31 million since their founding in 2004. Yelp is also boasting some impressive stats: 8.3 million uniques in the past 30 days and over 2.3 million reviews (with the 1 million mark being reached on May 2007). Yelp is in a competitive space with Citysearch, InsiderPages, and YellowBot. With this latest round, DAG joins previous investors Max Levchin ...