Weird. As a ubm I would not be happy if my jw gave our address and any other info out to anybody. I don't think Putin will give a rats behind about the letters about jw's.
Though I often wonder why jw's at the door will not give me their address while they are visiting MY door and (later) writing down what I have to say. They won't even give out their names! Heck, they wouldn't even admit they were jw's when they used to come to our house. I would nearly have to browbeat it out of them, "are you jw's?!!!" Thankfully, my house must have big red x on it, stay away from that one! finally.