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Popovers are the worst feature of the modern web. They're usually a very aggressive way of drawing attention to something I don't care about. Even when they're supposed to be a useful part of a web page interface, it's an obsolete modal dialog paradigm.

Should I block popper.js via an ad blocking filter?

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I'm not sure I understand your comment, perhaps we have different understanding of what a popover is?

For me a popover is essentially a small overlay of additional contextual information, visually attached to whatever it's providing additional context for. Historically triggered by hover, but increasingly triggered by click/touch. A drop-down menu in a navigation bar is a popover.

Maybe he talks about "popups"

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