This document discusses characteristics of quality content for search engine optimization. It identifies three key characteristics that quality content should have: it should be useful, aligned with the business or topic, and unique. It also notes that original research, citations, links, reviews and testimonials can help boost the credibility and trustworthiness of content. Providing an author biography is also recommended. The document is authored by Stone Temple Consulting, an SEO agency that won an award for best large SEO agency in 2016.