Google_Play_blacklist.userjs

// ==UserScript==
// @name        Google Play Blacklist
// @namespace   localhost
// @description spamers blacklist
// @include     https://play.google.com/store/*
// @version     1
// ==/UserScript==



( function()
{

  var tags = document.getElementsByTagName('a');

  for( var i = 0, tag; tag = tags[i]; i++ )
  {
    if ( tag.innerHTML == "Underground Lab" )
    {
      tag.innerHTML += " <span style='color: red'>SPAMER!</span>";
    }
  }

})();