Joe Davies is maintaining a new blog location that I think will be useful for those that are into network topics about the Windows platform. The blog is up on technet and is The Windows Server User Assistance Networking (WSUAN) team's blog. It covers all things networking related including subjects like DNS, DHCP, DirectAccess, BranchCache, Windows Firewall and my personal favorite, IPv6.
Also worth checking out is the Springboard Series blog that Stephen Rose runs - good stuff there for IT Pros.
There are several other personal blogs worth mentioning. My short list, for those that are interested, of ones I look at.
Jennelle Crothers at http://www.techbunny.com/
Susan Bradley at http://msmvps.com/blogs/bradley/Default.aspx
Colin McNamara at http://www.colinmcnamara.com/
Scott Lowe at http://blog.scottlowe.org/
Steve Riley at http://stvrly.wordpress.com/
Jeremy Stretch at http://packetlife.net/blog/
Jessica Deen at http://win7geek.wordpress.com/
There are a ton more out there that are really good, when I get a moment I will dump down my list to another post.