Name and intent aside, being able to detect when an ad-blocker is run and present alternate messages to the visitor can be helpful in many instances.<p>As a bit of an outlier example, PortableApps.com makes use of another detection technique to then show a simple message in place of the first ad on the page and hide any remnants of the other ads so that the page layout doesn&#x27;t look sloppy for ad-block users.  The message is shown on all internal pages (not the homepage) when ads are blocked and asks users to consider allowing ads for our site with a link to a page explaining how to ad an exception or making a donation to help keep us funded. The small message uses the same fonts and colors as the rest of the sidebar navigation so it&#x27;s not distracting and has CSS that reserves space for it in the event of ads being blocked so the content doesn&#x27;t jump at all and distract from reading a page.  I realize it&#x27;s a bit of an outlier case, of course, but many users do then allow ads or make a donation.  Granted our ads are bit less intrusive than many sites with only a single sidebar ad above the fold, no banner ad, no popouts&#x2F;flyovers, no download button ads, no ads that autoplay sound, etc and many of our visitors are open source&#x2F;free software fans.<p>For the curious, here&#x27;s a link to an internal page so you can see it in action with your ad-blocker active:
<a href="http:&#x2F;&#x2F;portableapps.com&#x2F;support" rel="nofollow">http:&#x2F;&#x2F;portableapps.com&#x2F;support</a>