title: Detecting AdBlocking software?
body: <p>I was recently visiting <a href="http://blog.creonfx.com/linux/mdadm-raid-failed-after-upgrade-from-ubuntu-810-to-904" rel="noreferrer">a site</a> and noticed that the page had a section that said it noticed that I was using AdBlocking software and could I kindly turn it off to help support a small site like that.
  I was just wondering how you would do that?  Would it be best done client-side or server-side?</p>