At SCALE today, I joined CAcert. It feels like a less chaotic version of the PGP web of trust. I've got enough points that I can start to "assure" (or vouch for) others identity.
So, if you run into me at a pm meeting, or conference, feel free to ask me to assure you. Just be sure to bring the proper paperwork and ID!
Update: Got some more CAcert points today, so I can now give people 35 assurance points.