The congruence is thrilling. The irony is equally (but oppositely), er, non-congruent, that this obscure concept (definition, rationale, and history) of a continuation, hanging around, awaiting its time in the spotlight.
These guys are really on to something. "Hijacking" a session is essentially giving someone the capability to do some work. You have the ability to pass these capabilities on to others, or not.
The ability to add "meaningful path segments" to a continuation-based URL is kind of like giving it a Pet Name.