[Webkit-unassigned] [Bug 165746] Allow cross-document intersection observing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=165746

--- Comment #2 from Jeffrey Gilbert <jeffreytgilbert at gmail.com> ---
For more information about "Viewability" measurement guidelines, see the following pages provided by standards leaders in advertising, IAB and MRC found here:

https://www.iab.com/guidelines/iab-measurement-guidelines/

Desktop: http://mediaratingcouncil.org/Desktop-Display-Impression-Measurement-Guidelines-US%20(MMTF%20Public%20Comment%20Final).pdf

Mobile App: http://mediaratingcouncil.org/Mobile%20In-App%20Measurement%20Guidelines%20(MMTF%20Public%20Comment%20Draft%20Final).pdf

Mobile Web: http://mediaratingcouncil.org/Mobile%20Web%20Measurement%20Guidelines%20(MMTF%20Public%20Comment%20Draft%20Final).pdf

Mobile (Guidance): http://mediaratingcouncil.org/062816%20Mobile%20Viewable%20Guidelines%20Final.pdf

WICG developed standard and examples: https://github.com/WICG/IntersectionObserver

And here's where we stand today regarding universal availability on browsers: http://caniuse.com/#feat=intersectionobserver

A deep dive (video) into ad fraud can be found here: https://www.youtube.com/watch?v=tgtH1L57iLc

All this is to say, we very much are ready for this feature out in the wild. It's sorely needed on Safari browsers, and it is a high value feature for the mobile web and mobile app ecosystems and this helps reduce payouts for bad actors.

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