Problem:
Google, Yahoo and MSN have all made allowances for working within China, while national search engines such as Baidu and SoHu operate under the same set of restrictions but are able to work within them, as they are Chinese national companies. The American based companies have also made allowances. Explain in detail how each American company has had to adjust their economic model to suit Chinese national laws and regulations. This should be an in-depth paper that explores how each company approached the rules and requirements for working in China.