Andrea Vahl is a social media consultant and frequent contributor at Copyblogger and Hubspot, and is also known as social media edutainer, Grandma Mary. John Haydon is a leading expert on helping nonprofits use Facebook to market their causes, conduct online fundraising, and enhance their brands. Jan Zimmerman is a hands-on marketing professional focused on smaller businesses and regularly shares her expertise at seminars and training events throughout the United States.