What do you know about ARIA (Accessible Rich Internet Applications)? If you've heard of it, you might know that it's for making websites more accessible, right? What if I told you that bad ARIA is actually worse than no ARIA at all?

Some accessibility is built-in to web dev, so ARIA isn't always needed. But when it is, it's crucial to understand what you're doing, so you don't end up with a site that's less accessible than when you started.

I want to help people understand why the the first rule of ARIA is don't use ARIA, and conversely, when ARIA *should* be used, and how to do so in a way that doesn't actually do the opposite of what you're hoping for (ie. making sites less accessible).