Changes in algorithms are the last thing an SEO agency would want to deal with. This means that they need to also change the set of search engine optimization techniques. If they do not make the necessary adjustments, they might lose face with their clients. Changing algorithms actually happens because Google have confirmed that they made about 500 changes in their algorithms in 2010. This is one of the reasons why website owners especially those that are created for e-commerce should seek other means of driving traffic to their sites.
Although link building is also vital in search engine optimization, this is seen as the next effective means of driving traffic to the sites. With a number of available methods in link building, it is highly possible that e-commerce sites can realize an increase in traffic. A classic example of the improvement in algorithms is the classification of keyword stuffing as black hat SEO.