Speaking of Randfish, if you are looking to keep up with some of the more advanced search related topics (I hope you enjoy math), Randfish's site could easily satisfy your need. Go to www.socengine.com/seo to check out not only the various SEO articles and tools, but also his SEO blog. Rand likes to delve into the various white papers put out by search scientists, toss the ideas around, and then summarize his reading for us all. Which is a really good thing, because after looking at those math equations in the white papers for more than 10 seconds, my eyes begin to droop and my mind starts to wander. I have a lot of respect for Rand's tenacious search for answers to SEO questions. Spend some time delving into his site, and you probably will too.