It was simply a repost of a pre-existing reply #14 by FWF that apparently revealed all.
That part is already covered.
Well, the thanks go to Frank.
The problem here is that the information at first was quite confusing partly because the malicious "plugin" uses some of Greasemonkey IDs and partly because most of us don't scroll back to the OP, reading each post when we are browsing threads.
The other thread, in fact, derailed to religious beliefs and I couldn't see they were talking of the same topic till I scrolled back.
Browsing boards is quite different from reading a book/thesis which is well sorted. The information was much more confusing to people who dropped in the threads than to those who followed them from the start.