In some contexts, the term SEM is used exclusively to mean pay per click advertising, particularly in the commercial advertising and marketing communities which have a vested interest in this narrow definition. Such usage excludes the wider search marketing community that is engaged in other forms of SEM such as search engine optimization and search retargeting.
Before Sharpe ever came into close proximity with the internet marketing field, he was a construction worker. Needing a way to make ends meet, like millions of other people around the world, he turned to a field that could hopefully pay the bills. But try as he might, he was never able to actually get ahead. Until one day, when Sharpe discovered the amount of money being made online by internet marketers, his entire mindset changed.
Links - Links from other websites play a key role in determining the ranking of a site in Google and other search engines. The reason being, a link can be seen as a vote of quality from other websites, since website owners are unlikely to link to other sites which are of poor quality. Sites that acquire links from many other sites gain authority in the eyes of search engines, especially if the sites that are linking to them are themselves authoritative.