Thank you, Frank. I take your point. Signing one's name to ones writing may result in the writer being careful about his facts and taking positions that enable him hold his head up high.
I work for a government agency. The terms of my employment preclude me from taking a published position on a matter concerning my employer.
However, sometimes I think my employer is pursuing a position contrary to the public interest. So, I would like to express my disagreement with its position publicly but anonymously.