YouTube is a video sharing website launched in 2005. Top YouTubers can earn millions annually from advertising revenue. Facebook is a social media platform launched in 2004 with over 1.5 billion users worldwide. WhatsApp is a messaging app acquired by Facebook that allows free messaging along with voice and video calls. Twitter is a microblogging site launched in 2006 that allows users to post and interact with short messages known as tweets. PlayerUnknown's Battlegrounds is an online multiplayer battle royale game launched in 2017 that is addicting due to skills improvement, leveling up, and having no clear end.