Zillow Inc. (NASDAQ:Z) will acquire StreetEasy for $50 million in cash. StreetEasy is the dominant leader among search engines when it comes to the New York real estate market. The acquisition will give Zillow a huge presents in the most lucrative real estate market in the country. StreetEasy boasts about 1.2 million users. With real estate coming back, this is a great move by Zillow. Zillow's main rival Trulia Inc. (NYSE:TRLA) should watch out. (Image source: lindazemler.com)