| page rank | Page rank (PR) is a value between 0 and 1 and is assigned by the Google algorithm. This value quantifies link popularity and trust among other factors. |
| firefox | A popular free, cross-platform, graphical web browser developed by the Mozilla Foundation and volunteers. As of September 2006, estimates suggest that Firefoxs usage share is around 12% of overall browser usage. |
| content-rich doorway | Noun phrase. A doorway page dressed up with graphics, navigation, and linked to from a site map so that it looks like a normal part of a Web site. The copy is written to rank for a single keyword expression. |
| e-commerce | The buying and selling of products, all conducted online. |
| uncertainty principle of seo | Noun phrase. The two states of a Web document (indexed and relevance to a given set of queries) cannot be determined at the same time. The more queries to which a page is known to be relevant, the less information about the pages indexing status can be determined. The more information about a pages indexing status that is known, the fewer queries to which the page is relevant. |
