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A comment on Are ad blockers doomed or have we already won? A history lesson. Parent comment
Actually the issue is that the companies paying you to run the ads don't want you to host it yourself.
* They're paying for impressions, and they don't trust you to report those honestly.
* Real time bidding means the ad to be displayed often hasn't been determined until a few milliseconds before the page loads in your browser.
* They can't (as easily and reliably) collect demographic and behavioral data (ie spy on you) if you don't contact their servers directly.
Actually the issue is that the companies paying you to run the ads don't want you to host it yourself.
* They're paying for impressions, and they don't trust you to report those honestly.
* Real time bidding means the ad to be displayed often hasn't been determined until a few milliseconds before the page loads in your browser.
* They can't (as easily and reliably) collect demographic and behavioral data (ie spy on you) if you don't contact their servers directly.