There are so many changes in link building strategies that Google no longer accepts. Since the Google Panda and Penguin updates, most of these no longer work for search engine optimization. The following are the link building strategies that used to work in the past but no longer work with today?s search engines: 1) Low Quality Content The Web is filled with articles that are written purely for link building purposes. It is easy to identify these small caliber ? low quality content rich articles based on the way they are written. There are a number of websites and platforms set up to approve articles based on randomly generating a topic. This is horrible for the organization of the website, and the quality of the content itself. Article spinning is another huge factor that results in low quality content. There are many article spinning programs out there that will likely do more harm than good. 2) Uncommon Anchor Text The former standard of link building used to consist of an anchor text link that was (keyword rich in nature) on a quality website. However, this has changed with the recent Google algorithm updates. Your site will easily lose ranking in the search engine results page (SERP) if you have too many unnatural-looking anchor text links. The key to avoiding this is to use various types of anchor text such as head term keywords, and long tail keywords. You have to make sure that you avoid a back-link profile that is filled with repetitive anchor text. 3) Domains that are Accurate Matches Google used to give high SERPS to exact match domains. However, Google has recently made a change that will reduce the rank of exact match domains that are of poor quality. Seo.com is such an example of an exact match domain since it consists of an anchor text that the site desires to rank for. The former trend was that if you had an exact match term found in your URL, you would inevitably rank higher in the SERPS versus those websites that didn?t. This has greatly changed with the recent algorithm shifts. 4) Footer/Sidebar Links One of the most effective link building strategies (that used to work) was footer and sidebar links. However, using these Post Google Panda/Penguin will definitely yield negative results. The reason being is because prior to Google?s algo updates, websites used to sell other websites links that could be placed sitewide. This is a huge no-no in the eyes of Google. There are various forms of sidebar links. These include the general blogroll link. This does not cause any harm or help since it is just an internal link list. External sidebar links (that are not good) are those random keywords lists with exact match anchor text in the sidebar of a blog. These appear as paid links to the search engines.