From its start in January 2001, the site has grown exponentially to encompass about 7 million articles in 251 languages. Every second of the day, Wikipedia’s servers are bombarded with between 10,000 and 30,000 page requests. The US rating agency comScore World Metrix calculates that the combined Wikipedia sites received more than 192 million unique visitors in February, making it the world’s sixth most visited website - behind those run by giants such as Microsoft, Google and Yahoo.