millions of people
People will watch an subscribe your your YouTube channel if you tell people the name of your channel and have interesting content.
Most people use their names.
Yes, you can search for people on YouTube. The more famous a person is, the easier it is to find them on YouTube. You can search for them by trying to find a video they uploaded or their channel name.
Troy and Johanna, (I think that's his name) Troy has a youtube channel called troyhasacamera (maybe spelled a little differently). That's really all I know...
Depends if you allow people see this. So it is optional.
because the more subscribers means the better their channel is and the closer they get to becoming a YouTube Partner
Ninja channel does not exist. The only Ninja channel is the Youtube channel of Ninja. There people can find a lot of videos of the computer game Halo.
if your username is searched enough it will show up
Do it but when you do make sure you tell people about it and be yourself
dont think they are aloud to use it for there job.
The best way to get traffic and views is to have a video on a topic that's relevant to your niche or your audience and that's already going to attract a lot of people. If you want to get more views on your YouTube videos, it's best to make videos that are interesting and entertaining to a lot of people.