I thought I would rework this and try it again. :)
I found an old baptism nullification letter here written by poster Balsam, and revised it a bit.
I really think we should do a large-scale baptismal nullification request. Letter and more info here.
I am concerned there is no way to track how many people did it. When Mormons did their mass resignations, they did it in a park and could count all the applications. If I ask people to just send their own letters, I would have no way of knowing how many were sent. I tried setting up online surveys/petitions to collect signatures for the letter, but they were either rejected for TOS violations or the free sites do not allow enough signatures.
Beyond curiosity, the number is important in order to get media attention. If we can't quantify it, it may be "not news".
Or maybe if we could get it trending on social media (#unJW), that would be a way to tell if it went viral.