// ==UserScript==
// @name         mangowpis tag
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       waifu
// @match        http://www.wykop.pl/*
// @match        https://www.wykop.pl/*
// @grant        GM_getValue
// ==/UserScript==

function doit(){
        b=document.getElementsByName("body")[0];
        b.value=b.value+"\n#mangowpis";
}

(function() {
    m=document.getElementsByClassName("row buttons dnone")[0].children[0];
    var btn = document.createElement("a");
    btn.setAttribute("class","button");
    btn.setAttribute("onclick","doit()");
    btn.textContent="#mangowpis";
    m.appendChild(btn);
})();