"A brand is not a logo or a tagline (although it may include these).
A brand is not a mission statement, a website or an ad (although it may be expressed in these).
A brand is a promise..." Learn More
"The coolest banner ads, best search buys, and hottest viral videos may win consideration for a brand, but if the product gets weak reviews—or, worse, isn’t even discussed online—it’s unlikely to survive the winnowing process."