YouTube earns advertising revenue from Google AdSense, a program which targets ads according to site content and audience. The vast majority of its videos are free to view, but there are exceptions, including subscription-based premium channels, film rentals, as well as YouTube Premium, a subscription service offering ad-free access to the website and access to exclusive content made in partnership with existing users.
In January 2018, the 23-year-old elder Paul brother was kicked off YouTube’s Google Preferred program, which gives favorable ad rates to popular channels, after he filmed a video in Japan that showed an apparent suicide hanging from a tree. He apologized. His income from videos (pratfalls, pranks) and brand deals took a hit, but loyal fans kept his hefty merchandise business afloat.
In 2013, YouTube introduced an option for channels with at least a thousand subscribers to require a paid subscription in order for viewers to watch videos. In April 2017, YouTube set an eligibility requirement of 10,000 lifetime views for a paid subscription. On January 16, 2018, the eligibility requirement for monetization was changed to 4,000 hours of watchtime within the past 12 months and 1,000 subscribers. The move was seen as an attempt to ensure that videos being monetized did not lead to controversy, but was criticized for penalizing smaller YouTube channels.