http://www.merill.net/post/2008/10/WCF-Performance-Optimization-Tips.aspx

Discovered that you can and should manually create a MyService.svc file in the root web folder.

Rename app.config to web.config

Manually copy your binaries from /bin/Debug or /bin/Release to /bin

Don’t forget to add <DataMember() _ above your public properties. Making them public is not enough.