OK guys, you're _all_ wrong about Shibboleths.

They're not just a way for others to identify a cultural group. They're a way for a cultural group to identify its own members. Shibboleths, if I remember correctly, were long tracts of hebrew spoken without error, akin to a secret fraternity handshake -- something that not only was difficult to execute but also difficult to learn; one would have needed to have been part of the organization for some time to execute it correctly.

Shibboleth is really the wrong word here.

--Dan