Neteffects
Blog from the owner of the Internet Marketing company Neteffects. I also owns Eurofind and many other directories.
http://www.home.no/kservik/

Clasione Blog
Personal blog of John Colascione hosted on Google Blogger.
http://clasione.blogspot.com

XSEO Blog
SEO Industry News and Views by XSEO's Matt Paines. Includes advice, tools and tutorials on SEO.
http://blog.xseo.com