The YouTube User Bubble - also referred to as the YouTube User Revolution - refers to a economic bubble between early-2007 and late-2008 (potentially as far as early-2009) when the global economy saw a significant increase in the marketability of YouTube and other web-based user video platforms. During this time, worldwide revenue as a result of advertising on user-uploaded videos to platforms such as YouTube saw a 750% increase from previous years for users themselves, while total global revenue saw a near twenty-fold increase (while actual statistics are limited, pre-2007 global revenue is estimated at $1.2 million, while mid-2007 revenue is believed to be upwards of $25 million).