Summary of interfaces in 3.5 .NET framework IEnumerable, IQueryable and IList

IEnumerable - supports being used in a foreach statement and that's about it.
IQueryable - supports further filtering, paging, etc. Does not support random access via an indexer. Implements IEnumerable
IList - supports random access via an indexer. does not support further filtering. Implements IEnumerable

Two frameworks are better than one

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Implementing a Bing Search Using jQuery

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Comparing ASP.NET MVC and ASP.NETWebforms

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Ajax survey 2009: jQuery and MS Ajax are almost tied among .NET developers

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The most used Ajax/JS library among .NET developers is jQuery, which is used by the 71,4% of the users. Second comes the Ajax Control Toolkit with 58,8%, followed by the core ASP.NET Ajax library, which is used by 44,8%.