A fedposter is an imageboard or forum poster who is most likely a federal agent. Originating from 4chan's /pol/ board and associated communities, the term refers to a poster who openly calls for violence against others or encourages one to break the law in some manner.
The fed part of fedposting comes from the fact that these posts are either made by federal agents hoping to entrap someone into saying the same thing and getting visited by the feds for it, or by naive people saying the same things and ending up with visits from the feds.
Chances are if somebody is talking about blowing up a religious building on /pol/, they're either a fedposter or they're getting a visit from the feds real soon.
The womens liberation movement was fueled by hundreds of years of oppression, and the femosterone of stagnant female factory workers expected to return to the household role prescribed to them by US men following WWII.
If I'm going to be honest with you, in my own humble opinion without being sentimentalof course, without offending anyone who thinks differently from my point of view, but also by looking into this matter from a distinctive perspective, I would like to say I have nothing to say.