Recent quotes:

How Google's Evolution is Forcing Marketers to Invest in Loyal Audiences - Whiteboard Friday - Moz

Therefore, when we do SEO, we have to think about it as, "How do I earn a loyal audience and then use their amplification to help me perform in search?" Rather than, "How do I do SEO for my website to earn visitors that I can convert into a loyal audience?" That's a new a challenge, a new paradigm for us.