XFN 1.1 profile

XFN 1.1 profile: "Friendship (pick at most one)
contact
Someone you know how to get in touch with. Often symmetric.
acquaintance
Someone who you have exchanged greetings and not much (if any) more — maybe a short conversation or two. Often symmetric.
friend
Someone you are a friend to. A compatriot, buddy, home(boy|girl) that you know. Often symmetric.
Physical
met
Someone who you have actually met in person. Symmetric.
Professional
co-worker"