Posted by Spring Metrics. The infographic shows the evolution of web analytics, from the "old school" way to collecting data for the "new school" method. Could add more detail but a good engaging piece nonetheless.
Search Engine Optimization (SEO) Audit Checklist, check your website's SEO in 20 minutes. This images links to a companies website that does webpage audits. However this image explains optimized content and off-page SEO.