Popular social-networking site Facebook will open an office in India, joining a long list of international firms that have looked to tap a skilled workforce that provides support services at relatively cheap wages. Facebook’s office in the southern Indian city of Hyderabad will support users, advertisers and developers in India and around the world, the company said in a statement on Monday. Hyderabad also houses other foreign firms, including Internet powerhouse Google and software giant Microsoft, whose Indian employees work on everything from writing software codes to providing customer services at cheaper salaries than in developed nations such as the United States. More than 8 million of Facebook’s total users are in India, the company’s director of global online operations, Don Faul, said in a post on the Facebook blog. Facebook will initially recruit a small team in India, and anticipates further growth as the office expands. It is hiring people to join the online sales and operations teams that it is forming in the Hyderabad and Austin offices, Faul said.