Comment by hintymad

A trajectory observation: People from the US and maybe Europe seem love having all kinds of niche forums, like PhysicsForum. On the contrary, Chinese people seemed love having a centralized place. Case in point, Zhihu(zhihu.com) was a clone of Quora, yet now Zhihu is the largest site for finding deep discussion of practically everything, maths, machine learning, history, physics, engineering, general science, just name a few. Tons of researchers and experts and hobbyists are there to share their insights. In contrasts, the quality of Quora seems have been deteriorating over the years, and most of the experts are in all kinds of niche forums anyway.

I wonder why there is such a difference.