One thing you'll notice reading almost any blog (or site running blog-like software) is that articles and posts vanish quickly. For some sites, it is a matter of days - for others months. The end result is the same - after a period of time, good posts vanish into the ubiquitous "site archive" - where posts go to die, often never to be read again.
Some sites have started to use a footer linking to popular posts, or author's choice posts. This is a reasonable solution, however is not ideal. An ideal solution would be to create a system that allowed for easy site navigation - to make it extremely simple for a user to find things they might be interested. I'm not interested in re-inventing site navigation, but I am interested in your opinion as a website user.
What works for you? Date-based archives? Topic-based archives? Tag-based navigation? If so, have you found any sites where these types of navigation made it easy for you to find interesting articles or posts? Are there any other options? Do you use site search engines where available? How do you use them? Are there sites that don't work? Do you ever move beyond the latest post in your feed reader?
There are a million questions I could ask, but I guess if I had to sum them up in one go, I would ask - how do you like to find interesting things to read on a site?
AddedBytes.com is the online playground of 
This may not be representative to all blogs, but on mine I have implemented several navigation options: site search, RSS, a date-based archive and tags. When analyzing my statistics I can conclude three things:
1) most users come from Google or another search engine. They jump to an indexed topic directly, read it or ignore it and then leave.
2) the group of rss subscribers mostly check the new stuff and do not look in the archives at all
3) the other portion of loyal readers (or new and curious readers) occassionally browse the archive or do a search. it somewhat makes sense to give them several options for that, but the return in my case is limited. They spent very little time digging through the archives, but that may be in the nature of my content ;)
I'm thinking the average user profile nowadays is somebody using a search engine to navigate. if your site is interesting to them, they may navigate through it once. if they like what they see, they subscribe to it or bookmark it and then monitor it. That's how I got to your site :)
I personally am a big fan of tags and search, especially when a blog or site has lots of content you could otherwise never find.
PS: I'm not sure if this is me only, but my Firefox 1.5.7 crashes each time I try to comment here. In IE it works.