Is it just a matter of time before there is a Baidu.us portal? In this regard Russia's search engine, Yandex, has operations in the United States near Google's headquarters. What will happen if Microsoft acquires (or fails to acquire) Yahoo!? What will Baidu's considerations be for its next choice of secondary listing? How should investors evaluate the stock? These decisions and events will help determine the global, regional, and country battle shaping up in the search engine markets.