// ==UserScript==
// @name           hideFacebookSocialAds
// @namespace      knorby@uchicago.edu
// @description    Blocks Social Adds
// @include        http://*.facebook.com/*
// ==/UserScript==


function getElementsByClassName(classname, node)  {
    if(!node) node = document.getElementsByTagName("body")[0];
    var a = [];
    var re = new RegExp('\\b' + classname + '\\b');
    var els = node.getElementsByTagName("div");
    for(var i=0,j=els.length; i<j; i++)
        if(re.test(els[i].className))a.push(els[i]);
    return a;
}

ads = getElementsByClassName("feed_item clearfix social_ad", document.body);
for(var i=0; i<ads.length; i++)
  ads[i].style.display="none";