Presentation: Data and Data Access - State of the Nation
Presenter: Eric Nelson http://blogs.msdn.com/ericnel

General

• ADO.NET Team Blog http://blogs.msdn.com/adonet
• Mike in our team http://www.miketaulty.com ( search Entity or LINQ )
• Data Platform Developer Centre http://msdn.microsoft.com/en-gb/data/default.aspx
• Datasets http://blogs.msdn.com/bethmassi/archive/2008/04/12/linq-to-sql-n-tier-smart-client.aspx 

LINQ

• LINQPad http://www.linqpad.net/

ADO.NET Entity Framework

• EF Dev Manager http://blogs.msdn.com/dsimmons
• FAQ http://blogs.msdn.com/dsimmons/pages/entity-framework-faq.aspx
• Entity Framework Design http://blogs.msdn.com/efdesign/default.aspx

ADO.NET Data Services

• Team blog http://blogs.msdn.com/astoriateam

ADO.NET Sync Services http://msdn.microsoft.com/en-us/library/bb726002.aspx

Microsoft Sync Framework

• Team blog http://blogs.msdn.com/sync/

SQL Server Compact

• Team blog http://blogs.msdn.com/SQLServerCompact/

SQL server Data Services http://www.microsoft.com/sql/dataservices/default.mspx

Project Velocity http://msdn.microsoft.com/en-gb/data/cc655792.aspx