WCF+ORCAS
MSDN:
Partial Trust:
https://msdn2.microsoft.com/en-us/library/bb412175(VS.90).aspx
Atlas (JSON):
https://msdn2.microsoft.com/en-us/library/bb412173(VS.90).aspx
Syndication:
https://msdn2.microsoft.com/en-us/library/bb412202(VS.90).aspx
POX / Web Programming Model that is used by Atlas and Syndication:
https://msdn2.microsoft.com/en-us/library/bb412169(VS.90).aspx
New OASIS Protocols. Additions to the following:
https://msdn2.microsoft.com/en-us/library/ms734776(VS.90).aspx
https://msdn2.microsoft.com/en-us/library/aa751906(VS.90).aspx
JSON AND .NET 3.5
https://channel9.msdn.com/ShowPost.aspx?PostID=335761
BLOGS:
you can get VS.NET 2008 here(beta version)