filter_9gag.js

(function() {
  function hideBoringArticles(nodes) {
    nodes.filter("article.badge-entry-container.badge-entry-entity").each(function(i, el) {
      if($(el).data("entryVotes") < 20000) {
        $(el).hide();
      }
    })
  }

  var MutationObserver = window.MutationObserver;
  var observer = new MutationObserver(function(mutations) {
    mutations.forEach(function(mutation) {
      var $nodes = $(mutation.addedNodes);
      hideBoringArticles($nodes);
    });
  });

  var articleList = document.querySelector(".badge-entry-collection")
  var $currentArticles = $(articleList).find("article.badge-entry-container.badge-entry-entity");

  hideBoringArticles($currentArticles);

  observer.observe(articleList, {
    childList: true
  });
})();

Yeah :D! Very nice man!