The average citizen in China does not use any foreign websites to do anything [citation needed]. All the services you and I consume online are replicated in China by Chinese companies. From Gmail to Yahoo!, from Facebook to twitter, from Amazon to eBay, from CNN to FOX.
It's really no surprise you haven't heard of this (I haven't either). Very few such Chinese sites even attempt at marketing themselves out of mainland China (notable exemption being the original Alibaba marketplace to great effect, Taobao is apparently a different site by the same group). It's fascinating how the internet has so effectively bridged other cultures while keeping others at arm's length - even when connected and technically accessible.