No normal people know what "PPC" is.
You have to make it very simple: eg "Be first on Google in minutes"
Contact every local business / enterprise organisation. "We've 5 free places at a seminar we're running next week on how to be first on Google"
"Ideal for lawyers / business owners / marketing mgrs - no technical skills needed"
Forget PPC to promote PPC!
Worked for us....
Good luck
Geotarget the campaign so that it only shows up for local searches.
Have a lot of related search terms covered (as you've geographically restricted it to such a degree that you've probably filtered out 95% of the searches).
I'd broadmatch for the same reasons as above.