SEM 2.0 - join
Intermediate to advanced search engine marketing discussion. Members are typically dedicated to helping one another, so applications that appear to be from prospective spammers will be deleted. If you join, please contribute regularly if you have ideas that can help others!
Low activity, 1698 members, restricted

Google Search Engine Optimization SEO Google - MSN - Yahoo - join
SEO: A leading resource for search engine optimization submission and SEO discusion. We offer search engine optimization and site promotion as well as tools and resources useful for better placement / positioning for your web site in search engines. Search Engine Optimization Promotion SEO
Low activity, 2465 members

Inside AdWords - join
This is an announcement list for Inside AdWords at http://adwords.blogspot.com. All posts to Inside AdWords will be sent to this list. Planned traffic: every business day.
Low activity, 11982 members