You've just launched Facebook Jobs, a marketplace for employees and employers. Job listings are up 20%, but employer response time for applicants is down 20%. How would you approach this?

Focus on identifying the key metrics that indicate the health of the Facebook Jobs marketplace. Start by analyzing the implications of the 20% increase in job listings—what factors may have contributed to this growth? Then, delve into the decreased employer response time; explore potential reasons behind this decline and how it affects user experience. Consider proposing actionable strategies to improve response times, such as enhancing employer engagement tools or implementing notifications. Finally, outline how you would measure the success of your proposed solutions, ensuring you tie back to the overall user experience and marketplace efficiency.