From what I've read, I had the impression that she has many Jobsian (for lack of a better word) qualities. Especially with regards to product design: apparently she was a perfectionist at Google, going so far as to even care about subtle color differences and the effect these had on people.

As an engineer, I've always had more respect for managers with a technical background compared to managers with "just" an MBA, so in that regard I'm definitely interested in how Mayer's leadership will shape Yahoo - I think I would respect her as manager as I can only appreciate the opinions of people I respect in a work situation.