B&H Photo Video is probably the most well known example, they won't accept an order on the sabbath.

https://www.google.com/search?client=firefox-b-d&q=b%26h+sab...

But the site still functions to browse.

off topic but I wonder why client is the first query parameter in that URL. I guess there's some stuff on the search page that changes based on what you are browsing from? they already have the user agent data so I can't imagine it's for marketing data tracking needs

	▲	walrus01 3 hours ago \| parent [-]
		I'm using the main line firefox release on MacOS here, and yeah it does seem to do that... Clearly google already knows what browser I'm on from useragent as the most rudimentary ID and other browser fingerprinting measures as well. (edit: one theory would be they're tracking how many URLs are copy/pasted and shared by firefox users to non-firefox users and then loaded by people with different browsers, there has to be some value to them in that data in the aggregate of millions of search page loads). I figured leaving it into the copy and pasted URL is harmless and ultimately mozilla derives the bulk of its revenue from its search deal with google, so it's also a way of supporting continued firefox development in the most minuscule way.