One of the factors that provides more traffic generation is the ease of being found by the suitable audience. The nodal point isn’t to appear in SERPs top ten -though it will obviously be a good thing for any site-, but to be listed with suitable keywords. This will immediately reduce bounce rates -the number of users who abort navigation in less than 30 seconds-, and will significantly increase conversion rates.
The best way to ensure our findability by a suitable audience is to provide relevant content for our keywords. Because of new semantic features present in search engines architecture, text relevance becomes crucial. For this reason, techniques such as stuffing, that is cluttering the text with keywords, and other black hat techniques like hidden text, and duplicate content have become pointless, apart from exposing the site to severe penalties by Google, including lowering to zero the Pagerank.