I follow several topics on StackOverflow in my RSS river, including one on RSS itself. There's a pretty good flow, and some questions are repeats, and from those I learn where we might have done better in the past, and learn about problems we might try to solve in the future.  

A very frequent question on StackOverflow is this: The feed for a site is useful for finding the last 20 or 50 items. How can I find the rest?  

The answer is an unhappy one for most sites. You can't. So we've tried to address this issue, completely, in the minimal blogging tool I'm working on, also known as Blork. Hoping to provide an example for developers of other blogging systems. This is an idea that everyone should adopt, imho. Would make the web more useful. 

In Blork, the feed is everything. There is only a very simple HTML rendering of your blog. Your feed is intended to be plugged into a lot of different places. If you want a traditional blog as output, we have Tool for that called rssToBlog (it works with Atom too, btw).  

Not only do we write your posts to a feed, but we also maintain a calendar-structured archive of all your past posts. Which begs the question, how do you find them? 

The answer: look in the feed.  

There's an element called <microblog:archive> that fully describes the archive. It tells you where to look, and the start date and end date of the archive.  

A screen shot. 

And the feature is described on the docs page for the microblog namespace. (Which is still a draft, comments welcome.)