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Actually this question is based on a Blog Entry, which discusses the topic for FF2. But how does this work with FireFox 3?

I know that there must be a workaround, because recently I visited a site saying: "Please disable AdBlock+ before entering this site" :(

Hubert Kario
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Federico Elles
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3 Answers3

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There's no general-purpose way to do that, for security reasons. Even the FF2 version mentioned there was specific to that particular extension -- you can't assume identically-named and -placed icons for all extensions.

The AdBlock-spotters, as Stephen presumed, tend to be behavior-based and specific to that extension. Likewise Greasemonkey-spotters, etc.

Paul Roub
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Please see this url. http://www.guyfromchennai.com/?p=104 This is worked for me

Maniammai
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  • clever work, good man. though its a shame you can only use it if you control the addon, in order to be able to add the flag in the first place. still might come in handy one day, and worth knowing about, thanks. – user280109 Jan 16 '11 at 13:44
  • Page can't be found. Do you still have the solution? – NeoTechni Jun 12 '21 at 16:57
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There are other ways they could be detecting AdBlock+. It could tell that you never loaded the ad with some server side code and assume you're using it, maybe?

Or if the ad is flashed based, javascript could try to communicate with it first.

Stephen
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