When a channel is invited to our network an email is sent from YouTube themselves to the channels account holder. The email contains a link that you need to click in order to accept the invitation. You can also just log into your YouTube account and accept the invitation from your YouTube dashboard.
How do artists make money on YouTube? For starters, by putting music on YouTube for free with a digital music distributor.
YouTube address the most common questions asked about the recommendation system, such as how they personalize recommendations.