[Note: this program still works, but because the underlying data is so badly out of date, it's practically useless. The only useful thing to do is look at the source.]
This is like the Oracle of Bacon, but for weblogs. Based on the links between weblogs, it will try to find a path between any two you specify. The data comes from the blogging ecosystem.
Now there's an API!
"[A]s fun to use as it is poorly named." -- blogosphere.us
"Amazing." -- Topher Tune's Times
"Something I've been looking for for some time. I thought it would come from Blogstreet or Google Labs..." -- Keks
"It had to happen." -- iWire