A travelling tip when in douala, don't keep all your money in one pocket... hide some in your shoes... put always have some money on you. Another tip if your staying in a hotel or appartment, always leave some lights and the television on if u leave your room during the evening. Be carefull if you need to change money... always calculate how much they should give you before changing, and count carfully to be shure they gave you the right amount. If it's not the case they will surely give excuses as... there is a tax... or the rate exchange is not the same here... d'ont swallow... and don't hesitate to ask your money back. Never change your money in the streets, even though you might get a better exchange... most are fake money.