| Ad Block Detection Page
The Mozilla Foundation and its Commercial arm, the Mozilla Corporation, previously allowed and endorsed Ad Block Plus, a plug-in that blocks advertisement on web sites and also prevented site owners from blocking people using it. This site was created to bring attention to the unethical practice of blanket ad blocking and especially denying site owners the right to detect ad blocking.
As of FireFox 5, Ad Block Plus was no longer compatible with FireFox, and therefore unusable. Eventually it became compatible again, but only as a fully detectable plugin. Ad Block Plus, as all other ad blocking software is now detectable by browsers. The makers and "fanboys" of Ad Block Plus wailed that by doing so ALL sites would block ad-blocked browsers and make them obsolete. It's been several years, and few sites have actually done so.
My point all along was that site owners deserved the right to detect and block people using ad blocking software. Apparently Mozilla agreed, but didn't want to make a big fuss about it, so they implemented their new policies subtly, so as to avoid any backlash from Ad Block Plus fanatics.
If you want to test the ad block detection via 4 different methods, then you can use our handy ad block detection page.
Ultimately, while enduring harassment, name-calling and wild-accusations, my efforts prevailed, and my goal was achieved. Ad Block Plus is detectable. The playing field is once again even.