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. As a bit

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. 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'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's not distracting and has CSS that reserves space for it in the event of ads being blocked so the content doesn't jump at all and distract from reading a page. I realize it'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/flyovers, no download button ads, no ads that autoplay sound, etc and many of our visitors are open source/free software fans. For the curious, here's a link to an internal page so you can see it in action with your ad-blocker active: http://portableapps.com/support http://portableapps.com/support