I am trying very hard to see your comparison, but I am afraid I just don't quite get it.
We are voting about our favorite books. In the Reading Recommendations forum.
I think it is reasonable to expect that people who are going there to advocate their Best Of books, would and should interact with people in the process. If I were posting about a book I liked and suggested others should read, I would not demand MobileRead hide my username by that post.
I humbly posit that the entire point of such a poll is in order to share with other people. It is difficult to do that when one is arbitrarily getting all inscrutable.
I believe we should follow the example of the Book Club.
To be honest, I am completely baffled at why anyone would WANT to hide their vote.
Why would they even bother to vote anyway, in that case?