In a personal note, I think this is a good idea but it may be getting out of hand. Wether we like it or not, from the minute that we have no other recourse but be anonymous, we are playing by their rules. An excess of such would simply compel them to label us as cowards and confirm their fears.
In my case even an anonymous letter could rat me out. I've observing more and more into Spanish forums and there is such blind obedience and I realize the trend is pretty much everywhere in the Spanish circuits. If a letter of DA came to my hall, even anonymously, I could easily be pinned to me. I am pretty much the only active publisher that has quit FS for good and has denied participating in the MS any further.
Just my honest opinion.