Intriguing how selective your googling is WAV.

Frisco is a common name for San Francisco, but raises the ire of some inhabitants. SF or the City are common among residents.

Cisco seems not to be an accepted name for San Francisco: it was your misuse of the vernacular, pretending a familiarity which you do not have.

Or are you American as well?

Did you study simple economics on your degree course, or was it a module on the FLT course?

Stu