a) do you think this is a good idea. I had never heard the term before here (sheltered life) and when I saw it on a discussion I checked the acronym list, then googled, before finally asking. I have seen other posters have the same problem/question
b) Would it just say Men's Rights Activist or would you add more (without using the word fucknuggets) 
tbh - looking at the [http://www.mumsnet.com/info/acronyms current list] it probably would just be Men's Rights Activist.