Ye Olde Blogroll - Because blogs are the soul of the web
blogroll.org
What Jamie wrote
A blogroll on your website was one of the earliest forms of discovery on the web. You could hop from site to site based on these recommendations. Webrings evolved as "bigger and decentralized" blogrolls if you will. Manuel Moreale had blogroll land in his lap as it were, and he gave it a brand new launch using People & Blogs as a core part of it. Good stuff.