I was poking around waypath and got goosebumps when I realize how powerfully cool it is:
What is it?
Waypath is an attempt to network the weblog community, connecting weblogs that share common themes, ideas, and topics.
How does it work?
Waypath’s Related Weblog Navigation engine analyzes weblog entries to determine their core conceptual makeups, compares them with one another to find out how related they are, and presents you with its best guess as to what’s related to your original input. This is done all automatically, using available technology.
Want to find other blogs that are posting on topics similiar to you? Plug your URL into WayPath. Filter out the blogs you know. You’re left with blogs that share common thoughts. Best of all, do a search, then save it as an RSS!