LGTM Sorry for the belated review. This is a great sample, we'll get a lot of mileage out of it.
My only complaint is that the clientFactory has too many getters and is passed around too much. I'll take a crack at fixing that myself. The app also doesn't use the Editor framework like it should. John L is supposed to be on the hook for that, but I wonder if Rodrigo should go ahead and do it instead, just as an excuse to get familiar with editors. http://gwt-code-reviews.appspot.com/1427803/ -- http://groups.google.com/group/Google-Web-Toolkit-Contributors
