> 1. We have a little bit of text we can be reasonably sure voidnull wrote -- some sort of text-likeness algorithm might be able to give us some candidates -- pointed at newsgroups/forums/etc where SDF users might hang out.

People call me extremely paranoid for this, but I've seen how effective author-analyzing software is.

I would almost certainly try to learn a new language if I want to stay anonymous, and only use that language for my anonymous alter-ego.

There are plenty of non-English communities out there, and if you're data is sufficiently interesting, people will translate it for you.