Interactive is an expanding piece of the ad spend pie here and around the world, and Magna Global has predicted it will overtake TV in the US by 2017. Facebook is a big part of that ecosystem and it reckons it can offer both scale and granularity. So we caught up with Facebook head of New Zealand Stephen Scheeler to find out what’s happening here and how House of Travel has harnessed the social network and is moving away from traditional media.