Do you know the Top 20 Most-Subscribed to Youtube Channels?
Information from https://en.wikipedia.org/wiki/List_of_most-subscribed_YouTube_channels
Automatically-generated channels that lack their own videos (such as Music and News) and channels that have been made effectively obsolete as a result of the transferal of their content (such as JustinBieberVEVO and RihannaVEVO) are excluded.