As detailed and granular as I try to get with my posts on ADO.NET Data Services, I always seem to miss something important/cool. Luckily for me, Mike Taulty has been picking up a lot of the slack. He has been writing a ton of content around ADO.NET Data Services and is covering some great topics. One thing I appreciate about his writing style is that he isn’t satisfied with doing high-level overviews, he goes really deep into the code/concepts. I would suggest subscribing to his blog, because he churns out posts pretty fast, and you don’t want to get behind 
Here are some great posts he’s made lately that are recommended reading:
1 from –rj
I’ve been relying on Mike’s code since March 2006. Try a search on ‘”mike taulty” site:oakleafblog.blogspot.com’
Pingback from http://oakleafblog.blogspot.com/2007/12/linq-and-entity-framework-posts-for_20.html.
–rj