Debugging stuff
Tess - .NET Debugging Demos Lab 3: Memory
Tom - Having problems with Visual Studio or .NET?

Other stuff
Muaddubby - A C# central logging mechanism using the Observer and Singleton patterns
Brian Harry - A Great Deck on TFS and Distributed Development
Dave Burke - Bits for February 15, 2008
Ed Maurer - Breaking Change in Linq Queries Using Explicitly-Typed Range Variables
Larry Osterman - Casting from one interface to another…
Kathleen Dollard - Catching up on Blogs – Conceptual Space
Davide Pizzolato - CxImage
Scott Colestock - Deployment Framework Release on CodePlex…
Alphons - DNS.NET Resolver (C#)
Federal Developer - Free Download: Updated Visual Studio 2005 tools for SharePoint Development
Udi Dahan - From CRUD to Domain-Driven Fluency
Tom Hollander - Gosh! GAT/GAX is Golden! and Why your customers will love agile (even if they think they hate it)
Greg Duncan - Managed ISO (CD/DVD Image) Creation via IMAPIv2 and Vista SP1 RTM is now available for MSDN Subscribers (via the Top Subscribers Downloads)
Matt - NHibernate composite-element mapping
Jonathan de Halleux - Pex = (P)rogram (Ex)ploration
Mike Ormond - Updated Source Code Formatter for Windows Live Writer

Career stuff
Freelance switch - A Simple Follow Up Formula
Mike Gunderloy - Freelancers Happy but Underpaid

Web stuff
Bill Evjen - Better Surfing by Changing your Host file
John Wilinson - JSON Spirit: a C++ JSON Parser/Generator Implemented with Boost Spirit
Brian Sherwin - Moving your Log4Net configuration out of web.config with ASP.NET 2.0 web sites.
Federal Developer - WEBCAST: Introducing Internet Information Server 7 for Developers

Other link blogs
Alvin Ashcraft - Daily Bits - February 15, 2008
Christopher Steen - Link Listing - February 15, 2008
Arjan Zuidhof - LINKBLOG for February 15 , 2008
Mike Gunderloy - Weekend Coffee Break: MicroISV Marketing, Calendars & Coworking and WWD Coffee Break: Funky keyboards, S3 Access & Time-tracking

Database stuff
Tibor Karaszi - Finally got Kalen's new Query Tuning book…
Steven Smith - Stored Procedure Performance Varies Between ADO.NET and Management Studio