Mr RB, I should think there are not that many feds that are trolling forums for 'zapper' projects.
There is plenty of trolling for remote control type stuff though.
rmn tech they don't bother people they look for people that want to bother other people.
It is not illegal to send give or supply electronics circuits, it is however illegal to do ANYTHING illegal with those plans, and the basic IP trail is traceable enough to if not determine who what or where then to at least gleam some information.
It's called data mining, in order to mine data you need trends, you need stimulus. Trolls and idiot posts fit that well, to see what who where might want to do what.