I dont tink you will find one that only have lfsvideos the reason is that lfs is "to small" i mean its easier to upload them to youtube\viemo and sites like that and post them here.. there where a lfsvideos site but it is now closed..
If you are looking for videos Youtube and Viemo is the best place
If I understood right, they only giving there links from LFS Videos and show it there? Or do they upload their stuff themselves too?
I'm a bit annoyed at the moment... :/
Imagine it as LFS vids' Youtube. As far as I know, if you don't want it to get shared, don't upload it at all. As everyone can take the html(or whatever the code is provided) code and just put it everywhere. I don't know if you can disable it on certain videos in YouTube, though.