user script to link chosen stream to google+ logo

googleplus_default.user.js

// Google+ default stream
// version 0.1
// 2011-07-02
// Public domain
//
// ==UserScript==
// @name          Google+ default stream
// @description   sets default stream on Google+
// @match	  https://*.google.com/*
// ==/UserScript==

// set this to your own chosen stream
var TARGET_STREAM = "https://plus.google.com/stream/circles/p4e439570e5a3376";



if (window.location.host === "plus.google.com") {
  var logo = document.getElementsByClassName("a-U-Pg-T")[0].getElementsByClassName("a-b-h-Jb")[0];
  if (logo)
    logo.href = TARGET_STREAM;
}

// also update Google+ links from other google services
var contentDocument = document;
var contentFrame;

if (contentFrame = contentDocument.getElementById("canvas_frame"))
  contentDocument = contentFrame.contentDocument;

var links = contentDocument.getElementsByClassName("gbzt");
if (links && links[0].host === "plus.google.com")
  links[0].href = TARGET_STREAM;