title: How to monitor and/or throttle rate limit cpu/bandwidth by client-side web pages?
body: <p>Nowadays it appears that many webpages want to use my cpu/harddrive/bandwidth in order to show me their ads/pages/information in beautiful but expensive ways. </p>
  
  <p>Often I like these new pages, but sometimes I'm a curmudgeon and am just annoyed that my fan starts spinning and the EMF loads rise when I open the pages.</p>
  
  <p>Is there a browser/plugin that I can use to throttle, best case, and/or monitor, worst case? I am not very knowledgeable of the Reactive JS, etc techniques, so I am hoping there is an easy solution?  </p>
  
  <p>thank you!
  Anne
  ps Normally I use Firefox but of course I have Chrome on my machines (win8, win7, mac 10.8) as well.</p>