1. Graywolf - Always full of information on the search engine optimization and search marketing fields, whitty commentary and in depth articles. You’ll find tons of great insights here.
2. Seobook.com - Leading SEO blog by Aaron Wall covering the search space. It offers marketing tips, search analysis, and whatever random rants come to mind. Focuses on search engines, search engine optimization tips, and search engine news. Lots of great, solid commentary about the world of search engines and SEO, plus excellent archived and current articles. You could spend a lot of time at this blog and not exhaust all it has to offer.
3. Seomoz.org - News, tips and highlights from the search marketing industry. I’ll let this blog speak for itself: “Free, open & content-rich. SEOmoz is a search engine optimization resource created to benefit the entire SEO community. My favorite is whiteboard Fridays. Every tool, service & article provided is absolutely free to all users.” I have quite a few articles from SEOmoz saved permanently in my Bloglines subscriptions.
4. Problogger.net- Great  blog, especially for well… bloggers!
5. Mattcutts.com- Matt Cutts works for Google and is responsible for search engine quality (i.e. getting rid of spam) and for helping web masters with good SEO practices. This one is a must for anyone that wants to master good, solid, SEO practices.
6. Searchengineland.com – It will cover the latest news on search engine marketing and promises to be the single most resourceful tool on search engine marketing. Search Engine Land keeps track of the many developments in the search engine world, providing an insider’s view of what works and what doesn’t as far as search engine optimization.
7. Bluehatseo.com – This blog has a lot of great tips and techniques to help the average webmaster break beyond their barriers. However they are nothing more than skillsets. Skillsets are worthless without direction.
8. Blog.searchenginewatch.com- Blog founded by Danny Sullivan, internet consultant and journalist. It offers many search engines resources and SEO related news. Consistently updated free search engine optimization information, tips, news, and opinions; as well as the latest search engine and directory news and information. I especially appreciate the writing style at Search Engine Watch, which presents somewhat complicated information in a very accessible, non-threatening sort of way; in other words, a succinct lack of techno-speak.
9. Seroundtable.com - purpose behind Search Engine Roundtable is to report on the most interesting threads taking place at the SEM forums.
10. SEOChat.com – Leading SEO blog by Aaron Wall covering the search space. It offers marketing tips, search analysis, and whatever random rants come to mind.

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