I Sent in a DA letter almost three years ago. Absolutely the best thing for me! My wife and then pioneer step daughter saw how unfairly I was treated, labeled, shunned, local needs talks about me etc. They too have completely left largely due to what they saw and were disgusted by it.
They both faded, and still at times get hounded, and both are thinking about DA'ing themselves now.
Elders, friends and numerous other JW's did read my DA letter. Those seeds of critical doubt are now planted.
Three weeks ago this same DA letter was posted online here: http://newsblaze.com/story/20081209054218zzzz.nb/topstory.html
I have since received well over 100 e-mails from people, including active JW's, that feel the same as we do.
(Emails and more about all that here on this thread): http://www.jehovahs-witness.net/jw/experiences/168958/1/EXPOSING-THE-WATCHTOWER-SOCIETY-ONLINE
The more people that hear what we now know, the better IMO.
If they DF you instead, then you are viewed differently. They kicked YOU out. Rather than you kicking THEM to the curb. Does make some think a little more.
I say GO FOR IT.
All the Best,
Vinny