[arcfour]

Opt in features are a great way to increase user frustration and confusion. See the whole new geolocation API they had to make for browsers since people would perma-deny it reflexively and then complain that geolocation features weren't working.

[optionalsquid]

That's a good point, though I'm not familiar with the (changes to the) geolocation API you mention. Do you have any recommendations for reading up on that development?

[arcfour]

Sure, I should have said geolocation element, since the original API still exists and is used: https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...