I like this from a voters standpoint. When voting it would be nice to have the option of attatching a message occasionaly. Sometimes novices need a little push in the right direction and you don't want to do it publicly. I try to send messages but often forget. If it was as easy as choosing my vote, typing my message and then continueing to read the thread I would be more inclined to provide some feedback for cases where a reply is too much and a pm is just too much work ;) (yea i'm lazy whats your point?)

This could be a setting that defaults to off so no one who doesn't want it has to deal with it.

I don't think it should be anonymous though. I don't realy see a reason to make it so and if it is implemented I would want the option to not be anonymous.

Those are my 2 cents, over all I think it is a nice idea that can add value to the PerlMonks experience without a lot of work. Arguments that this is a non-issue often provide links to many large threads that show this isn't a true non-issue. Obviously it isn't critical or massivly important, but it would be a nice feature to have.