Founded on April 17, 2007, Single Grain is a digital marketing agency based in San Francisco. With a strong focus on ROI (return on investment), the company combines a variety of tools to ensure that companies get the most out of their efforts to increase their online visibility and profitability. Such tools include search engine optimization (SEO), social media marketing, conversion rate optimization (CRO), and pay-per-click (PPC) advertising. The company offers a free downloadable ebook entitled The Only Guide to Effective SEO You'll Ever Need. Single Grain's clients have included Cafe Press, HostGator, Intuit, TurboTax, Yahoo!, Random House, Salesforce, Kitchen Aid, and Sony Pictures.