If someone were to ask what I was reading online I would reply that as for SEO, these sights are certainly worth a daily look:
John Battelle’s Search Blog – http://battellemedia.com/
Search Engine Watch – http://blog.searchenginewatch.com/blog/
SEOmoz – http://www.seomoz.org/blog
Search Engine Land – http://searchengineland.com/
Search Engine Roundtable – http://www.seroundtable.com/
Pronet Advertising – http://www.pronetadvertising.com/
ShoeMoney – http://www.shoemoney.com/
Search Engine Journal – http://www.searchenginejournal.com/
Online Marketing Blog – http://www.toprankblog.com/
Matt Cutts – http://www.mattcutts.com/blog/
Graywolf’s SEO Blog – http://www.wolf-howl.com/
Search Engine Guide – http://www.searchengineguide.com/
SEO Pedia – http://www.seopedia.org/
Small Business SEM – http://www.smallbusinesssem.com/
SEO Scoop – http://www.seo-scoop.com/
Web Analytics World – http://manojjasra.blogspot.com/