Posted by Tom.Capper Back in September last year, I was lucky enough to see Rand speak at MozCon. His talk was about link building and the main types of strategy that he saw as still being relevant and effective today. During his introduction, he said something that really got me thinking, about how the whole purpose of links and PageRank had been to approximate traffic. Source Essentially, back in the late '90s, links were a much bigger part of how we experienced the web — think of hubs like Excite, AOL, and Yahoo. Google’s big innovation was to realize that, because people navigated the web by clicking on links, they could approximate the relative popularity of pages by looking at those links. So many links, such little time. Rand pointed out that, given all the information at their disposal in the present day — as an Internet Service Provider, a search engine, a browser, an operating system, and so on — Google could now far more accurately model whether a link drives tra...