See my response below and the logs were secure removed shortly after (as stated in the blog post).
I would be careful about doing something like this on a large scale, I would actually be surprised if this doesn't technically violate some laws. Please be careful, you don't want to end up trying to explain nameservers to a judge. [edit - and the rest of us don't want that either, even just selfishly I would like as many security researchers practicing their craft as possible, but also I don't want people being punished for trying to do the right thing]