I have noticed two interesting things in SMS: 1. On a sign in delfino Plaza, and on the poster of Isle Delfino which has a Boo scribbled on it in Hotel Delfino, it says "Benvenuto", which means "hello" in Italian, right?
2. The shapes you squirt off the walls to get blue coins... there's X, O, square, and triangle, right? Those are the PlaySatation buttons, right? Interesting... "wash away PlayStation!"