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A comment on Blocklist Facebook domains. Parent comment

Re:Blocklist Facebook domains by stephengillie on Tuesday March 20, 2018 @09:21PM (#16634468)
uBlock has much the same effect. Requests err in the console with "ERR_BLOCKED_BY_CLIENT" instead of a 404, so technically it is possible to detect this with a first-party JavaScript file.
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Re:Blocklist Facebook domains by 0xfeba on Wednesday March 21, 2018 @08:39AM (#16637498)
That's how the "please don't use an ad-blocker" stuff works.
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