Martha is responsible for a big portion of Mint.com's success. In the two years from launch in Sep 2007 to acquisition 2009, she helped me book and prep for over 500 interviews.
I traveled with Martha to New York, DC and elsewhere a dozen times, where she took responsibility for the Mint pitch nearly as much as I did.
Martha is one of the few PR people who is actually smart: she understands what makes your business unique, knows how to simplify it into a better pitch than you do, and can communicate your message even when you're not around.
I worked with Martha extensively at Intuit after the Mint acquisition, again when I started and sold Fountain.com, and will basically use her as my PR person for life. I can't speak highly enough.