Content marketing has been a trend for a few years now. But content is going only stronger and Agent Rank with other algorithm updates like Panda and Penguin will push the content to be more valuable. Great content includes quality information, pictures, videos, whitepapers, e-books and interactive infographs. In addition, killer content spreads like wildfire in social media which also boosts your SEO.
Quality content is worth investment as you gain loyal followers whom may become your next customers.