In case you are interested… I was initially just going to show the top 10, but then you would have missed some of my favorites like Keith Combs, Virtual PC Guy, or the Mac Mojo Blog! So, without further ado, I give you the top 25 blogs on TechNet and MSDN J
TechNet
MSDN
http://blogs.technet.com/markrussinovich
http://blogs.msdn.com/ie
http://blogs.technet.com/homeserver
http://blogs.msdn.com/saraford
http://blogs.technet.com/msrc
http://blogs.msdn.com/livesearch
http://blogs.technet.com/koalra
http://blogs.msdn.com/excel
http://blogs.technet.com/technetplussubscriptions
http://blogs.msdn.com/outlook
http://blogs.technet.com/sysinternals
http://blogs.msdn.com/oldnewthing
http://blogs.technet.com/windowsserver
http://blogs.msdn.com/access
http://blogs.technet.com/sbs
http://blogs.msdn.com/jensenh
http://blogs.technet.com/wsus
http://blogs.msdn.com/chris_pratley
http://blogs.technet.com/eileen_brown
http://blogs.msdn.com/sharepoint
http://blogs.technet.com/keithcombs
http://blogs.msdn.com/powershell
http://blogs.technet.com/technetczsk
http://blogs.msdn.com/somasegar
http://blogs.technet.com/virtualization
http://blogs.msdn.com/inside_office_online
http://blogs.technet.com/dmelanchthon
http://blogs.msdn.com/joe_friend
http://blogs.technet.com/askperf
http://blogs.msdn.com/windowsmobile
http://blogs.technet.com/steriley
http://blogs.msdn.com/macmojo
http://blogs.technet.com/momteam
http://blogs.msdn.com/rmauceri
http://blogs.technet.com/security
http://blogs.msdn.com/brada
http://blogs.technet.com/jhoward
http://blogs.msdn.com/tims
http://blogs.technet.com/kevinremde
http://blogs.msdn.com/coding4fun
http://blogs.technet.com/steve_lamb
http://blogs.msdn.com/brian_jones
http://blogs.technet.com/mu
http://blogs.msdn.com/virtual_pc_guy
http://blogs.technet.com/matthewms
http://blogs.msdn.com/larryosterman
http://blogs.technet.com/uc
http://blogs.msdn.com/ericlippert
http://blogs.technet.com/kclemson
http://blogs.msdn.com/michael_howard