No RadioYoutube

// ==UserScript==
// @name           NoRadioTube
// @namespace      http://mt.endeworks.jp/d-6/
// @description    Silences RadioYoutube. RY is cool, but it gets annoying
//                 when your timeline is full of those tweets.
// @include        http://twitter.com/*
// ==/UserScript==
function xpath(query, ctxt) {
   if (ctxt == null) {
       ctxt = document;
   }
   return document.evaluate(query, ctxt, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
}

function noradiotube() {
   var spanlist = xpath('//span[@class="status-body"]', document);
   var re = new RegExp('^[a-zA-Z0-9_]+ (CLAP|STAND)!');
   for( var i = 0; i < spanlist.snapshotLength; i++) {
      var span = spanlist.snapshotItem(i);
      if (re.test(span.textContent) ) {
         span.parentNode.style.display = 'none';
      }
   }
}

(function() {
   document.title += " (No Radiotube)";

   noradiotube();

   var enqueued = 0;
   document.getElementById('timeline').addEventListener('DOMNodeInserted', function(e) {
        if (! enqueued && e.target.nodeType == 1 && e.target.tagName == 'LI') {
           enqueued = 1;
           setTimeout( function() { noradiotube(); enqueued = 0; }, 2000 );
        }
      }
   , false);
})();