Search Engine Marketing (SEM) Companies & Resources

Search Engine Marketing (aka SEM) is a broad term for the internet marketing that companies and websites do with regards to the search engines. Search Engine Marketing focuses on Pay-Per-Click (PPC) and paid ways to get a site onto the search engine results page (SERP) for its important keywords. This is similar to search engine optimization (SEO), but search engine marketing focuses much more on paid placement as opposed to improving organic results. Below is a list of the top sites relating to search engine marketing, including both search engine marketing companies and information sources. If you think that a site is missing please "add a site to the list" at the bottom left.