I have just learned of Wikipedia recently but I was surprised by what it has. The number of articles is much more than Encarta although Wiki has been established for 3 years. Before becoming the member under the name Genghiskhanviet, I have contributed several articles, such as: Phong Nha-Ke Bang, most of airports in Vietnam, Long Thanh International Airport, Ca Mau, Vung Tau, Dong Hoi, Dong Ha....I hope I will contribute more.