SEOBy comes from "Search Engine Optimization By..." and is intended to be an informal professional organization for those that practice Search Engine Optimization, and operators of Internet search engines, vertical industry portals, and web directories

Security Expert Witness

Search Engine Industry Resources

SEO Book
It doesn't have a real fancy name, and that's perfect. This understated resource is one of the best values published on the Internet for those interested in plain talk on what the SEO industry is all about. We are a ClickBank affilate, but to show how much I think of this book and to remove all doubts that it's not the comission talking, the link is affilate-free.
[Highly recommend - 5 keywords out of 5]

How Internet Search Engines Work
With billions of pages on the Web, you use a search engine if you're looking for something specific. Learn how search engines acquire, store and organize all that data to help you find what you're looking for.

Dwoz.com
Directory of tools and resources serious webmasters need with the emphasis on quality and usefulness.

Whois-Search.com - Searching over 40 domain extensions!

SEOPapers.com
No, not something used to housebreak your SEO consultant, this site offers many articles on search engine optimization on a wide array of topics. Many different view points are presented, so don't expect any confusion to be easily resolved, but you will find quite a bit to help you make up your own mind.

New service offers hand submission to over 300+ directories