Christopher S. Penn talks social proof and marketing basics
Blogger, author, educator Christopher S. Penn reveals new insights on social proof, social influence and marketing fundamentals.
Blogger, author, educator Christopher S. Penn reveals new insights on social proof, social influence and marketing fundamentals.
Mark Schaefer is the top-rated marketing and business keynote speaker at conferences all over the world.
Want to solve big marketing problems for a little bit of money? Sign up for an hour of Mark’s time and put your business on the fast-track.
Subscribe to my {grow} newsletter for my weekly insights that will set you apart as an elite marketer.