On .cypherpunks, <rubin@usenix.ORG> writes:

There is a really cool service being offered on the web. It allows users to trace the paths of trust between two keys in the PGP world. It is worth checking out:

http://www.research.att.com/~reiter/PathServer/ ^^^^^^^

Use it and help AT&T bring key escrow to your door. No thanks.