According to George F. Colony here are Six things about marketing in the world of Web 2.0 that the CEO should know:
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One: Your Company Is Inside-Out In An Outside-In World

Two: Your Company Has A Bad Web Site

Three: You Should Be Asking Your Customer One Question

Four: You Don’t Own Your Customer; Your Customer Owns You

Five: Bits Want To Be Free — Bits Want To Break The Law

Six: Great Marketing + Great Technology = The Only Way Forward

via Aide-mémoire