// ==UserScript==
// @name       HaD beautifier
// @namespace  http://hackaday.io/hacker/3459
// @version    0.1
// @description  This changes the appearance of all pages 
// @match      *://hackaday.io
// @match      *://hackaday.io/*
// @copyright  2014+, DaveDarko
// ==/UserScript==

setTimeout(function(){ 
    $('[data-group="follow-contest-contest"]').hide(); 
    $('.contributorsAdded').hide();
}, 3000);

for tampermonkey..

I really don't like timeout functions, but since I don't know when the feeds are loaded and tampermonkey most probably only waits for document loaded, I had to do it this way.