Webnauts Net Blog

To be in Google’s main index, your pages need to have a certain undefined amount of juice (Pagerank), independent of other factors being involved.

Google uses PageRank values to set crawling priorities and to determine if a document should go into their main or supplemental index.

Before you start building links you can control the flow of  PageRank to boost your most important pages and keep them out of the Supplemental Index. With this technique you can save time and money!