" no-de-plume " is incorrect , oh braggaart Mensa member. A " nom-de-plume " is solely in refference to the author of books, who does not use his / her given name, and family name, for a variaty of reasons . The first, was / is often to conceal one's true identity because of who one is / one's family are. Women used this ruse, when females weren't allowed to write books / female authors woud NOT be printed. Them there are the writers, whose true identity , if known, would land him ( sometimes her ) in jail, due to the inflamatory / political / pornographic matterial contained in the book.
Them here is nom-de-guerre ; or name of war. Some of the al Qaeda members have those, and there is a long history of men using false names in wartime battles.
All your nic is, is a nic ; an internet term, used for whatever name , series of names, one chooses to be known as on internet sites such as this one, chat rooms, and / or games rooms , and E-mail; should that apply.
Now, just WHY do you not know any of these facts ? : - )