China\'s Internet advertising market has continued to heat up, hitting a volume of 28.77 billion yuan (about 4.72 billion U.S. dollars) in the third quarter of 2013, a major tech industry analyst said on Wednesday. The figure indicated a 24.2-percent quarter-on-quarter increase, according to Analysys International. In the booming Internet advertising market, Internet video advertising has become a major sub-sector with a market size of 3.25 billion yuan, which represents a 13-percent quarter-on-quarter increase. In the third quarter, China also saw growth in online searching, with its market size reaching 11.28 billion yuan, a 20.3-percent quarter-on-quarter jump. The top three online search service providers were Baidu, Google China and Sogou, with market shares of 76.9, 12.2 and 8 percent respectively.