Google Search indexes an array of websites. It is like the phone book of the internet. Depending on your filter settings, you may or may not see certain age sensitive sites.
Their are 3 types of search engines: Crawler-based search engines: Crawler-based search engines, such as Google (http://www.google.com), create their listings automatically. Human-powered...
There are a variety of types of search engine marketing.
PPC- Pay per click- Google Adwords, Yahoo Overture - a good way to figure out what works very quickly... but it costs.
SEO- Optimizing...