Which popular website turned 13 today?

Answer: Wikipedia

by Colin Wood / January 15, 2014

Over the last 13 years, Wikipedia has become the primary source of information for many general topics, as the website now hosts about 32 million pages, about 4.5 million articles, and more than 20 million users, according to the Wikipedia statistics page. In September 2013, Wikipedia was ranked as the ninth most popular website on the Internet.