I like www.seobythesea.com because he covers Patents and new things the search engines are doing.
I also like www.searchmarketinggurus.com because she goes into social media, search and other related topics.
If you are looking for real good SEO information. I have been a subscriber of SearchEngineNews since 2004, and never miss reading their monthly issues.
I have tried seomoz.org and seobook.com and they are expensive and provide almost the same info as SearchEngineNews. It is completely worth the USD 97.00 they charge.
Since then I have used lots of programs, read different ebooks/books, and I always go back to SearchEngineNews for info.
If anyone wants to see an edition of their 2004 ebook, so you can see the valuable content you can get from them please send me a private message.