Where can I find a good one-on-one Mandarin tutor in San Francisco?

this is a private tutor who has failed find a student through twitter facebook many other forums etc.  message me 

Maybe you can try one one one mandarin tuition online via Skype, it’s flexible so that you can manage your schedule anytime.

Top online tutoring sources: 

• verbling
• chinesepod
• duolingo