At present, the products based on WEB2.0 are: Baidu Encyclopedia, Wikipedia, Douban, Yinyuetai, Renren.com, DianDiantong, Wallop, yahoo360, openbc, cyworld, 43things, flickr, cragslist, glob, Qiqi, friendster, linkedIn, UU Tong, Youyou, skype, Amy, Link.