function doGet(e){
var app = UiApp.createApplication();
var panel = app.createVerticalPanel();
panel.add(app.createLabel("Parameters:"));
for( p in e.parameters)
panel.add(app.createLabel(p));
app.add(panel);
return app;
}
As a published service, with this URL (modified to include the "&..."):
https://sites.google.com/a/macros/thatwelove.com/exec?service=AKfycbxE4o2dQrpl6BpXSHdj-kPU1HyWuAZ3ncg¶m=example&another=value