Definition: Sitemap
As the name indicates it is a map of the site, it contains a list of URLs that need to be indexed and it also contains other information for the robots.
Definition: Satellite
A satellite page is a web page made for search engines. This is a trick used to include a certain amount of links to a parent site.
A HTML site map (with links to the same site) is valid as long as it is visible by users. It is better to divide it in categories.
The most searched words on Google in 2009
Google takes its expected list of most used words on your browser. Michael Jackson dominates in most of the countries and Tuenti is the most searched word in Spain.