SEM is the acronym for Search Engine Marketing. This area of online business deals with promotion of a website’s web presence through increasing their visibility through search engine optimization (SEO), search engine result pages (SERPs), paid placement, contextual advertising, and paid inclusion.

SEM looks at how a site can be marketed to gain maximum benefit for its owner. It looks at the long term return on investment (ROI) and the ways this can be achieved.

SEM is seen right throughout the Internet industry. Take Google for an example. You see sponsor ads, adsense ads, adwords ads and SERPs.  What Google is doing is really what every site needs to do to get high popularity and web presence.

To market a site means to get it noticed, to get it seen and to sell itself to its focused niche. Things like contextual ads help the owner to…