Reply to post: Re: Right here on the The Register

Revealed: The naughty tricks used by web ads to bypass blockers

Number6

Re: Right here on the The Register

That's actually bad business for the advertisers. If they're getting charged per page impression, the last thing they want is their ad being fetched and displayed on a tab that isn't currently being displayed. The javascript really ought to determine that the tab is not the top one and do nothing until it gets an event, not keep pulling in images that will never be seen. Of course, the ad-server benefits from the current model because they're getting paid for delivering the images regardless of whether they're being seen.

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