Just What is Google's Page Rank?

"What is PageRank?"
WebWorkshop (undated)

"PageRank is a numeric value that represents how important a page is on the web. Google figures that when one page links to another page, it is effectively casting a vote for the other page. The more votes that are cast for a page, the more important the page must be. Also, the importance of the page that is casting the vote determines how important the vote itself is. Google calculates...."

This is a pretty good resource for webmasters and bloggers. There's more detail than most discussions of Page Rand, and some sensible advice (like 'don't link to link farms').

Thanks to a fellow-BlogCataloger, Sway, for mentioning this in a BlogCatalog discussion thread about Page Rank.