rec.pyro Where a large group of us freely exchanged recipes for compositions for all kinds of explosives and pyrotechnic devices, with absolutely zero concern about the police or feds. Now get off my internet, you punk kids. ;-)
I bought a copy of The Anarchist Cookbook from a Target (there used to be these things called 'stores' that sold flat black disks of plastic that could reproduce music) a million years ago. We looked at some of the stuff, had a "we ain't that bright but WTF, mates?" and had to look up the correct way to mix stuff off of gopher searches at UM
Oh man... I remember reading through that book and talking over the mistakes with friends. There are some really bad formulas in there that nobody should try, ever. Phooo... thinking about it now, the last time I saw a copy was probably back in 1988? sheesh...