If a site appears as ********* that means it is banned here, folks... so don't try to work around it.
And you can find out before you post by using the preview button before you post. Many people's reaction is to try and work around it when they realize it is censored rather than editing it out. But you don't need to edit it out, because if it is banned then and you can see that it is banned using the preview, then you need not post it in the first place and therefore not get yourself into trouble.
Just because a site isn't yet on the censored list doesn't necessarily mean that it isn't a site we disapprove of though. Take whoreshub.com for example in the previous post. That appears to be a site which uploads full videos without anyone's auhorisation. ie. a pirate video tube site / rip offs / whatever you want to call them - that will likely be banned in the near future... particularly if people keep posting links to it.
So the general guidlelines would be make sure the video clips you share are small previews or legit links to longer videos which aren't ripping anyone off.