Thanks for the reply, Werz. I killed Facebook a few years ago, so I'm not able to see the Facebook page you mentioned, but groups such as the one you linked to that at least try to keep things from going off the deep end can be useful.
I sometimes glean useful information from some of the less reprehensible (?) "militia" sites, such as the one by former Army Ranger "John Mosby," at http://mountainguerilla.wordpress.com
He states up front that racists, etc, are not welcome (good), but will on occasion will make cracks like "if you believe that, then you're as wrong as two boys fucking" (bad). If you can get past that long enough to read and absorb, then there is A LOT of well written, almost erudite, long articles on such things as small unit tactics, rucking and load bearing, light infantry stuff, FLIR countermeasures, etc.
I take from such sources, without participating (I never comment on anything) or contributing.
Thus using my super duper Secret Squirrel methods I can use their own knowledge and tactics against them someday, or teach others to do so. Now, ain't that grand?