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Neat.

One suggestion: intuitively I felt like I needed to click on the popovers instead of on the underlying image. Permitting the user to move the mouse over the popover and click that as well might increase effectiveness for those who haven't seen this before.

Great idea! I've been incorporating different styles of UI features that the website owner can enable/disable at will, so I'll add this one to them.

Given the approx. 90M people complaining about your original link, can you not edit your OP?

Btw, it looks pretty cool.

It doesn't allow me to edit my original post, unfortunately. I guess too much time has passed since I posted it.

You can only edit for ~2 hours after you post.

That's pretty cool. How do you detect product edges?

They're manually created by the website owner.