"Big companies tap Arruda to lead charisma-boosting workshops. Starwood Hotels & Resorts recently hired him to speak to 300 execs. He has business from American Express, JPMorgan Chase and Microsoft."
- Suzanne Hoppough, Forbes Magazine

William is regularly featured in high-profile national and international publications and in broadcast media including BBC TV, the Discovery Channel and Fox News. He has a regular column at Forbes focused on personal branding and social media and has written for — and contributed to — hundreds of publications, including:

  • Advertising Age
  • AMA
  • American Way
  • BBC
  • Brandchannel
  • Cande Naste
  • CareerBuilder
  • Details
  • Discovery Channel
  • Cotidianul Media (Romania)
  • Elle
  • enRoute (Canada)
  • Entrepreneur Magazine
  • Financial Times
  • Forbes
  • Fox News Live
  • GQ
  • Harvard Business Review
  • Huffington Post
  • Marketing Profs
  • Men’s Health (Portugal)
  • Men’s Health (US)
  • Money
  • More
  • National Review
  • NECN
  • New York Times
  • NPR
  • NY1
  • Politico
  • PR News
  • Radio America
  • Strategies (France)
  • The Atlantic
  • Time
  • Trends (Belgium)
  • Tribune Media
  • Veja (Brazil)
  • Wall Street Journal