Danny Sullivan (at SearchEngineLand) wrote a very long articles on Google PageRank yesterday.. it already has over 500 diggs in one day. I haven't read it yet, everyone says its a must read :)

Here are the main topics Danny covers:

• Google's Definition: PageRank As Votes
• Recent Google Edits Emphasize PageRank Just One Of Many Factors
• PageRank For Searchers: Google Toolbar
• PR Stands For PageRank, Not Public Relations
• PageRank In The Google Directory
• PageRank For SEOs
• Seeing PageRank In Search Rankings
• PageRank Versus "Toolbar" PageRank
• PageRank Tech Talk
• Conclusion (Especially For Those Thinking I Don't Have Time To Read)