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Actually, there's no way to really block ad-block. It wouldn't be too hard to make an ad-blocker that used CSS and Javascript to do all of the blocking during

Actually, there's no way to really block ad-block. It wouldn't be too hard to make an ad-blocker that used CSS and Javascript to do all of the blocking during page render. It'd be an inefficient use of bandwidth and rendering time, but it'd be able to block 100% of ads and undetectable from the web server. In fact, before Opera had a built-in ad-blocker, I think there was an ad-block extension built on its "User Javascript" and custom CSS abilities.

Myrth 14y ago
Seriously? function verifyAds() { if (!adContentsVisible()) { loadAdContents(); } setTimeout(verifyAds, 1000); } verifyAds();
- kanzure 14y ago
  Yes, but it's easy for a browser to just override your verifyAds function.
- codeka 14y ago
  Huh? Extension can override JavaScript on the page, too, you know: window.adContentsVisible = function () { return true; }
  - Myrth 14y ago
    (function() { // local scope, can't override })(); My point is that I agree with grandparent, that they just allow ads to be shown, and it's not technically impossible to reload ads, or prevent page contents view, if no ads visible.
    - oinksoft 14y ago
      The plugin can absolutely mock the ad element(s) and make them seem to be visible.
    - comex 14y ago
      only because sites generally don't do so; if necessary, extensions could get much more aggressive with website scripts, current user script limitations aside.
- SquareWheel 14y ago
  If it's client-side, it can be defeated. Let's not enter into an arms race of larger and more bandwidth-intensive checkers/blockers to try to get the upper hand. If someone ad blocks, they're not likely in your target demographic anyway.
- deleted 14y ago
  [deleted]
- tedunangst 14y ago
  greasemonkey: function adContentsVisible() { return true }
  - Myrth 14y ago
    not if it's defined in local context.
    - lmm 14y ago
      I can modify my browser's javascript interpreter if I need to.
- ufo 14y ago
  Also, it is possible to block 3rd party ads without touching the browser by going straight into the underlying IP routing tables.
  - rabbidrabbit 14y ago
    I use http://someonewhocares.org/hosts/ http://someonewhocares.org/hosts/ as my hosts file, and it works great. It doesn't remove the placeholder for the ad, but it does stop it from downloading.
- saalweachter 14y ago
  "During page render". Render the page, identify the regions of the resulting bitmap which are ads, and blank them out. The browser can always just lie at the end, even after running all of the JavaScript and marking all of the DOM elements to visible.
- lignuist 14y ago
  If they find a way to force the visibility of ads, we still could move them to the bottom of the page.
lazugod 14y ago
Mobile Safari successfully refrains from adblocking.

Myrth 14y ago

Seriously? function verifyAds() { if (!adContentsVisible()) { loadAdContents(); } setTimeout(verifyAds, 1000); } verifyAds();

kanzure 14y ago
Yes, but it's easy for a browser to just override your verifyAds function.
codeka 14y ago
Huh? Extension can override JavaScript on the page, too, you know: window.adContentsVisible = function () { return true; }
- Myrth 14y ago
  (function() { // local scope, can't override })(); My point is that I agree with grandparent, that they just allow ads to be shown, and it's not technically impossible to reload ads, or prevent page contents view, if no ads visible.
  - oinksoft 14y ago
    The plugin can absolutely mock the ad element(s) and make them seem to be visible.
  - comex 14y ago
    only because sites generally don't do so; if necessary, extensions could get much more aggressive with website scripts, current user script limitations aside.
SquareWheel 14y ago
If it's client-side, it can be defeated. Let's not enter into an arms race of larger and more bandwidth-intensive checkers/blockers to try to get the upper hand. If someone ad blocks, they're not likely in your target demographic anyway.
deleted 14y ago
[deleted]
tedunangst 14y ago
greasemonkey: function adContentsVisible() { return true }
- Myrth 14y ago
  not if it's defined in local context.
  - lmm 14y ago
    I can modify my browser's javascript interpreter if I need to.
ufo 14y ago
Also, it is possible to block 3rd party ads without touching the browser by going straight into the underlying IP routing tables.
- rabbidrabbit 14y ago
  I use http://someonewhocares.org/hosts/ http://someonewhocares.org/hosts/ as my hosts file, and it works great. It doesn't remove the placeholder for the ad, but it does stop it from downloading.
saalweachter 14y ago
"During page render". Render the page, identify the regions of the resulting bitmap which are ads, and blank them out. The browser can always just lie at the end, even after running all of the JavaScript and marking all of the DOM elements to visible.
lignuist 14y ago
If they find a way to force the visibility of ads, we still could move them to the bottom of the page.

lazugod 14y ago

Mobile Safari successfully refrains from adblocking.