Wow... I wrote my own WebSub receiver and put it on an always-on server to get around the fact that I assumed YouTube doesn't have RSS from the fact that I couldn't find this information anywhere.
I have to wonder how much more dead RSS would be if Wordpress (like, 90% of blogs/news sites) didn't create a /feed by default.
Helps discover rss feeds for sites.
The screenshot of the RSS icon in the url bar brings back a memory I don't know if I had. Didn't Firefox used to do this by default or am I misremembering?