A fork of Rural Dictionary
If you create content on Youtube, watch people who create content on Youtube, if you interact with people on Youtube via comments or other social networks, if you have a connection to people on the website, then you are part of the Youtube community, and therefore, a youtuber.
"To me, a YouTuber is someone who part of the community of people that actually cares about YouTube and the creations that it hosts."- Hank Green