Always...
-Be Friendly
-Helpful
-Courteous
-Polite
Never...
-Ask for another Habbo's password
-Attempt to scam someone
-Try to get "free coins"
-Give out your password
-Give out your personal details
-Give out your e-mail
-Use scripting or flooding programs
-Harass other Habbos
-Evade the language filter
-Be rude to others
-Pretend to be a Hobba or a MOD