I find it difficult to accept any anonymous comment. In my world if you are not willing to put your name behind a comment or a stand you take, you are either not convinced with what you are saying or you are a person of deceit, who wants to hide behind a mask of anonymity.
It takes courage and conviction to say what you want to say and stand by it.
This happens in organizations too, where they institute an anonymous feedback. Such attempts only promote a closed culture and is very detrimental to organizations.