A raceway is a surface-mounted channel made of plastic or metal used to extend a circuit. Installing a raceway has the benefits of being quicker and cheaper then extending the circuit physically in the wall. The disadvantage of having a raceway installed is that the room might not look as nice with the visible channel. You could try to cover it up by placing furniture in front of the channel. If you would like a quick, cheap solution and don't mind having this channel visible, then this would make for a great option.