William Penn teaches marketing, branding and social media. He worked for companies including CNR-Entertainment, Royal Streaming, Arcade, NLTracks, Disney Pictures, Bacardi, Bavaria, MSN, KPN, New York Pizza, Bijenkorf, Yakult, KIA, DAF, Oreo, Nespresso, Fair Trade and UPC. Currently he works for Blackswan Concepts, MusicInBrands and Yamelo.