Answer: So he knows how they respond to certain things, and knows how to better portray the message he's trying to send.
Yellow, red, blue
Hope this helps
Answer: I believe it's the fact it used and does still display music videos on tv for "free", or the fact it streamed the most famous songs on it so people could go to their channel and listen to music / radio (but with music videos) at home.
Explanation:
