When would you want to use customVid:
* You have no Flash plugin available for your platform
* You don't like Flash
* You're using NoScript and don't want to unblock video sites
and you still want to be able to watch videos on certain video sites.
Why does this extension exist:
I'm using Firefox on FreeBSD with vimperator and NoScript. Due to a lack of a native Flash plugin and not wanting to whitelist sites like youtube in NoScript, I searched for a solution that let's me easily watch videos.