Recently I've added a new feature to my blog. It is a blogroll for each of my 'link categories' in the sidebars. I had two criteria that needed to be met. Those being an easy way to add links and a way to indicate if they were recently updated.
It was a bit of a process to set up initally, but now it is a breeze to keep up. I used BlogRolling because they had the update feature. The downfall (only a downfall because I'm cheap) is the fact that with the free account you can only have one blogroll. The 'Gold' edition allows several blogrolls. I needed six, so my work-around was to open six gmail accounts (ie email@example.com, firstname.lastname@example.org, etc) . Then I opened six corresponding blogroll accounts (ie blogu.tweaks, blogu.templates, etc). Each of those matched a heading in my sidebar. Take a look at my sidebar to see it in action.
As far as upkeep, BlogRolling has a feature called 1 Click Blogrolling that puts a link in your Bookmarks or Links Toolbar. Click on that when you find a blog you wish to add to your blogroll. After you click on it, log in to the 'account/sidebar category' that you want the link to appear. That's it! Nifty, huh.