[timwiseman]

They want to create a community based on honesty

Often the best way to get an honest opinion is to gauruntee anonymity, not remove it.

[lukesandberg]

That is one way to do it, but it is also a way for conversation to devolve (youtube comment threads?). So it is a balance. While anonymity may allow some people more freedom to express themselves in a positive way, it also makes it easier for people to express themselves in a negative way that may be considered harmful as well.