India has a population of 1.1 billion, out of which a mere 19 million people visited social network sites this past December, comScore reports. Still, social networking growth was significant last year: 51% overall. Google's Orkut, huge in Brazil, is No. 1 in India too, at 12.8 million visitors in December, an increase of 81% over the previous year. Facebook, at 4 million December visitors, is No. 2 (150% growth). Indigenous sites bharatstudent.com (88% growth) and ibibo.com were in 3rd and 5th places, respectively, but ibibo lost ground, traffic-wise, between Decembers 2007 and '08. In 4th place, San Francisco-based Hi5.com had the highest year-on-year growth at 182%. Meanwhile, the Times of India reports on the Internet as "a great social research tool."