Google wants to further strengthen its grip on the online contextual ads business. To this end, it has announced that it is going to acquire a leading Russian contextual advertising company, Begun, for $140 million . Begun’s network encompasses 143,000 Russian websites and 40,000 publishers. Rambler Media, the majority owner of Begun, will buy the remaining stake in the company and in turn sell the entire company to Google. According to Rambler, the online search ads business in Russia is expected to grow by 50% in a year’s time. The acquisition will allow Google to expand its wings over the lucrative, Russian-speaking internet landmass.