The Internet has become the first place to look for real estate. In 2007, more than 80% of home buyers actively used the Internet as part of their research process before buying real estate and before contacting an agent. This proportion keeps increasing, making online real estate a very attractive market. However, competition in this space is very fierce. Most real estate agents and companies have already built their own sites, and invest heavily in online marketing. Companies that provide a differentiated online service may have a chance to win this huge market. Online real estate company Trulia NYSE: TRLA uses interactive maps and strategic acquisitions to capture market share. Competitor Zillow NASDAQ: Z , on the other hand, emphasizes its \”hidden inventory.\” The company has rich information regarding pre-foreclosures and homes under construction. Then theres Move NASDAQ: MOVE , owner of Realtor.com, a huge database-driven website with more than 94 million properties. Which of these three companies has a bigger chance to win the promising real estate online market?