I'm looking to create a service (based on .NET Fx 3.5 or 4.0) that exposes data via Atom and enables AtomPub (so that I can update using Windows Live Writer).
There looks to be two options:
Use ADO.NET Data Services. From what I can tell this is the easiest to get working, but requires EF (I'm using LinqToSQL - although I know there is a workaround) and mapping the types seems a little inflexible. e.g. I still don't know how to remove elements from the feed.
Do something custom with a WCF Syndication Feed. This looks like the most flexible approach, but is of course custom, and will require more coding.
I'm interested in opinions from people that have implemented AtomPub in their own applications. Which approach did you use? (or did you do something different?)
Have you considered using BlogSvc:
http://www.hanselman.com/blog/CommentView.aspx?guid=75291315-f7aa-418a-b18d-2c10defa8bc1