Values
Long pages, which are rich in meaningful text (not
randomly generated letters and words).
Pages that serve as good hubs, with lots of links to pages that that have related content (topic similarity, rather than random meaningless links, such as those generated by link exchange programs or intended to generate a false impression of "popularity").
The connectivity of pages, including not just how many links there are to a page but where the links come from: the number of distinct domains and the "quality" ranking of those particular sites. This is calculated for the site and also for individual pages. A site or a page is "good" if many pages at many different sites point to it, and especially if many "good" sites point to it.
The level of the directory in which the page is found. Higher is considered more important. If a page is buried too deep, the crawler
simply won't go that far and will never find it.
These static factors are recomputed about once a week, and new good pages slowly percolate upward in the rankings. Note that there are advantages to having a simple address and sticking to it, so others
15
can build links to it, and so you know that it's in the index
Long pages, which are rich in meaningful text (not
randomly generated letters and words).
Pages that serve as good hubs, with lots of links to pages that that have related content (topic similarity, rather than random meaningless links, such as those generated by link exchange programs or intended to generate a false impression of "popularity").
The connectivity of pages, including not just how many links there are to a page but where the links come from: the number of distinct domains and the "quality" ranking of those particular sites. This is calculated for the site and also for individual pages. A site or a page is "good" if many pages at many different sites point to it, and especially if many "good" sites point to it.
The level of the directory in which the page is found. Higher is considered more important. If a page is buried too deep, the crawler
simply won't go that far and will never find it.
These static factors are recomputed about once a week, and new good pages slowly percolate upward in the rankings. Note that there are advantages to having a simple address and sticking to it, so others
15
can build links to it, and so you know that it's in the index
