Hi bob3160,
The Chinese primairy blocking reason is one of sheer protectionism (not unknown to some Americans too
and it pays:
China is keeping YouTube out because it has its own domestic video sites – Tudou and Youku – and it wants them to grow and prosper. Youku just made its debut on the New York Stock Exchange and is now worth around $5 billion.
Google’s departure has hugely benefited Baidu and now Alibaba, which has pushed the US giant into third place in the Chinese market.
Read:
http://blogs.telegraph.co.uk/news/malcolmmoore/100070017/why-does-china-block-foreign-websites/ link article author = Malcolm Moore (Shanghai Correspondent). So they probably aren’t blocking Qihoo.
Damian