Witkey (威客; Wei Ke in Pinyin) is a web-based system whereby users can exchange and purchase services and information, share knowledge and experience in order to save time and money. Generally, requests posted are of the type not easily answered on a general internet search engine and can be of either a personal or professional nature. Students and professionals alike post requests for help with research and even answers to homework. More and more of these requests are being posted on one of the ever-growing number of Witkey websites. There are 338 million internet users (or netizens) in China and this is increasing. The number of recorded Witkey users in China is estimated at 600,000 and is set to increase to 9 million by 2007 according to the Beijing-based CCID Consulting Co.