[recursive]

The *adblocker crowd. I think I'm in the "technical crowd" but I've never used an adblocker.

Running non-compliant extensions is your right, but the results don't need to be supported. I've run into this situation a number of times, although not with adblock. My advice has been to disable the extensions, or use a different browser without them.

[throwawayboise]

> My advice has been to disable the extensions, or use a different browser without them

You're leaving out the option of "not using the website."

Let's face it, nothing for sale on TeeSpring is essential. Just thank them for putting a roadblock on your silly impulse buy.

[recursive]

When I'm providing support, it's for my company's application, and it really is essential in those cases.

[rallemoose]

I agree. Ideally an extension never breaks a site. But if I were to make a store. The most robust thing in the store would be the checkout system. They’re leaving money on the table considering how little work it is to test the site with the few popular extensions. It’s basically like supporting a special payment method or exotic browser.

[rakoo]

> non-compliant extensions

Compliant to who/what exactly ? Extensions are executed in a user agent, ie a software acting on behalf of a user based on the settings they prefer. If anything it's the website that's non-compliant with the user's choice.

[recursive]

HTTP, HTML, CSS, ECMAscript all have formal specifications.

It's your choice to use things that don't conform, such as IE11, but I wouldn't assume it's the server's problem.

[Nextgrid]

Browsing the web without an adblocker is like running unpatched Windows XP on a machine exposed to the internet.