How many times have you been noodling around on YouTube and just at that point you want to show someone that amazing cat who can play the piano - an advert pops up and disrupts your viewing pleasure? It's annoying, right? All you want is that musical moggie but you have to wait at least five seconds while someone is hawking their wares at you before you can carry on. What is the point of the adverts and why do you have to be subjected to them? YouTube monetise their content by putting these adverts before their videos, as well as allowing those banners that can appear at the top or bottom of the screen halfway through the video. Content creators are then paid a small amount per thousand views of these adverts, with YouTube also taking a small cut - it's how the video site makes money and its how people can be made rich. Channel owners know the importance of monetising videos, conforming to the rules and making sure to do everything possible to get people to hit those adverts, and the amount that can be paid varies depending on the kind of content that's created, as well as a few other things that YouTube holds close to its heart - represented in CPM, or Cost Per Mille. Essentially, they'll give you a figure based on 1000 views of videos where ads are shown, so if the CPM for a channel is $7.50, for every thousand views that show ads, the user would get $7.50 from YouTube. With some bloke maths, based on that amount if just one video hits 1 million views, that's $7500, providing the CPM remains the same. Higher subscribed channels with popular content can have significantly higher CPMs and conversely, there are much lower CPMs too. It's perfectly possible to not only make a living as a YouTube channel owner, but to become astoundingly rich in the process. Ahead we have 10 of the richest YouTube celebrities (individuals, not corporate or news channels) with a rundown on what they produce and rough estimates on their annual earnings from YouTube. Prepare to hold on to your lunch, these figures could just make you sick. Note: Annual earnings are provided from estimates by YouTube ranking service SocialBlade. The top CPM figures are shown below. These don't count fluctuations in CPM, nor do they take into account sponsorship deals or any non-YouTube income. All data is right at the time of writing.