We all love case studies. Who is we? We in the SEO industry, we in social media and online marketing, we business people. Case studies show on real life examples, real websites, projects and campaigns that something works. Good case studies are more than proof though. They also show you how to market or optimize a site. They show an example of how it actually works. Case studies combine both, the insight of a how to articles and the business proof of a finished campaign.