Jamie Spencer, executive director at Magid Media Labs, said his research firm has found evidence showing that increased consumption of online video leads to more consumption of broadcast — and vice versa. If a person watches an episode of CSI online, they’re more likely to also tune in to the show when it’s on TV, he said. Conversely, if a person spends a lot of time randomly checking out the latest hot video clips on YouTube, they’ll tend to spend less time on the sofa flipping through channels.