Online marketing and technology company Market Leader Inc. posted a $4.3 million net loss for the final quarter of 2010, despite a 15 percent growth in revenue from the third quarter to $6.8 million.Market Leader's $14.3 million loss for all of 2010 was nearly double the $7.4 million loss for 2009.CEO Ian Morris said in a statement that 2010 was an "inflection point" for the company as it transitioned from selling leads generated by sites like HouseValues.com to providing customized websites and tools for agents and brokers.In January, Market Leader announced a five-year agreement with Keller Williams Realty to provide lead management, contact management and marketing design components of the brokerage's new eEdge platform.Morris said the eEdge agreement "significantly incre...