I'm not sure if discoverability is as important as it used to be for RSS. Nowadays you can simply input the URL of the site into your RSS reader and it'll find

I'm not sure if discoverability is as important as it used to be for RSS. Nowadays you can simply input the URL of the site into your RSS reader and it'll find the feed. When it comes to Facebook and Twitter, my guess is that RSS doesn't accomplish what those services are made for. As they have evolved, the reverse chronological posting has become less important. Plus, if you were Twitter, how would you want people to consume those tweets? Would you rather get them immediately or several minutes later in a format that has no context in the world of Twitter? With that being said, I think RSS still plays a role in consolidating and consuming news in a central location. But it should be up to the site designers/developers to offer an easy way to "subscribe" to that site (via email or RSS).