What Does "CPK" Stand For?

In My House "CPK" has always stood for California Pizza Kitchen - but since we OD'd on their salads, the phrase has been jettisoned from my vocabulary. Until now...

Cost per Keyword ("CPK") is a new SEM buzzword, according to this eMarketer article. A new Doubleclick report found that keyword prices rose steadily through Q3, but Fathomonline's most recent reports (through November) found that CPK was relatively steady (and a little bit down) for the last few months. Still, even Fathom acknowledged - in October 2005 - that there has been a 19% average increase in CPK over the last year.