Search engine optimization will undergo a huge transformation over the next several years. No longer will you be able to track your position for particular keywords and know for certainty that those rankings are what your consumers are seeing. Why? Because personalization, intention and geographical location will all be taken into account to deliver a unique set of search results to each individual searcher.
SEO is going to be a very different ball game, so a more sustainable approach is to focus on mining “the Long Tail” — those products or keywords that are in low demand but, given a large enough catalog/portfolio, can collectively add up to the majority of your business.