WTF are Fast channels (and should advertisers care)?

Worth $4bn in ad revenue in the US, free ad-supported streaming TV channels are only now gaining momentum in the UK. Here’s what you need to know…
Free ad-supported streaming TV (Fast) channels are, as the name suggests, free and funded by ads, and they now populate internet-connected TVs in their thousands. To viewers, they’re almost indistinguishable from linear channels of old, but instead of being broadcast, all of their content is streamed. T