SEO has changed in the past two years. Some of the things that were conventional praxis are now no longer acceptable and could result in negative ranking.
For example, the overuse of keywords with the intention of “gaming” search engines is a practice that will now land you in hot water with Google.In essence the entire search engine optimization landscape has changed and the emphasis is now on quality and unique content, trustworthiness and client interaction – which also means that social media has now become one of the determining factors in SEO.
Quality as opposed to quantity is now the rule when it come to link building.
Getting hundreds of low quality sites to link to you will result in negative SEO. The emphasis is on the quality and the value of the linking sites as an indication of the value of your site. This neat infographic sums up some of the main do’s and don’ts in modern SEO