I am a little skeptical of this despite having used a similar program to write to people in Massachusetts to encourage them to vote for a ballot initiative next month. Of course, part of that skepticism is that it (plausibly) couldn't guess which of the several David Walds it had an address for was the one in my email address book, but did offer me the one "Debbie Notkin" who lives in this state, who I know isn't my friend (she lives on the other coast).