As the Internet and Li Gui Li Kui difficile, Google and Baidu two major search engine giant, almost all of the keyword ads on the issue of infringement of the fall-off.

• 由于网络上李逵和李鬼难辨，谷歌和百度两大搜索引擎巨头，几乎都在关键字广告侵权的问题上跌倒过。