Welcome to the thirty-first edition of Community Convergence. This issue features links to seven very technical posts by Matt Warren on building LINQ providers. This is one of the most requested and important LINQ related subjects, so it is a great boon to us all that Matt wrote these posts. For those of you who don't know him, Matt is very talented and very senior engineer on the C# team. His credentials alone make this a must read series for people who are serious about advanced LINQ development. Near the end of this post you will also find a great series on LINQ to SQL by Scott Guthrie.