Study- Search users don't recognize organic vs. paid results
Web Log Analyers vs Real-Time Stats
How to write a good directory submission
Weblinks from the Search Engine's Perspective (other good articles at bottom of page)
15 Essential Strategies for Building Inbound Links
Company explains how they get Links from authoritive sites (very good read)
Good tip from Matt Cutts on CopyWriting
Google gets 60% of Searches, Yahoo 22%, and MSN 11% as of July 2006