You do not have to post any videos...(:
Youtube enables you to playback videos that other users have uploaded. When you join YouTube you make an account or channel. This is where you upload videos. You do not have to be a member of YouTube to watch videos.
post videos
Youtube
on youtube
Yes
No but be careful what you post on youtube
youtube
no you have to have an account
No. Videos on YouTube remain the property of the uploader.
because the creators of YouTube wanted somewhere to post the videos they took
There are quite a few websites that give you step by step instructions on how to post your videos on youtube. Youtube accepts most of the video formats that are being used by people.
Create a google count and go on youtube press upload to create videos