Sam recently clued me in to a series of
posts by his co-worker David Pallmann's that include a ton of great tips for using WCF. I went through all David's tips on my train ride home a few days ago and was inspired to go through our code to confirm and/or change our services to use many of the recommendations that David put together. If you're working with WCF, I definitely recommend that you check out David's tips and while your at it subscribe to his blog in case he drops any more tips the blogosphere's way.