Search wars begin as Sogou sues Qihoo

Any semblance of harmony between Sohu's (Nasdaq: SOHU) Sogou online search engine and spurned suitor Qihoo 360 (NYSE: QIHU) has quickly disappeared with a new series of lawsuits between the two sides for unfair competition and defamation.

via Business feed http://www.scmp.com/comment/blogs/article/1318348/search-wars-begin-sogou-sues-qihoo