GWT Studying 2014
There I'm going to make my personal RSS reader, which I called "Quintessence". It's based on ROME, GWT & Hibernate libs at the moment.
What I've learned:
GWT generates a lot of JScript code for each browser. I've limited this for Chrome, by pointing that in User-agent property in FeedsOverview.gwt.xml: <set-property name="user.agent" value="safari"/>
CSS for PopupPanel can be properly applied only with z-index as shown in the article: http://www.dwuser.com/education/content/z-index-property-how-to-control-stacking-in-your-pages/ Other way, background colour is ignored and the panel looks transparent.
RSS are retreived by ROME library, that I've read about in the book "Google App Engine Java and GWT Application Development" by Daniel Guermeur, Amy Unruh.