YouTube has added a cool new feature that helps viewers see more related clips, even from an embedded video in a blog, social networking site, or any other web page. Now when a video has completed playing, several related videos pop up and even copy URL or embed code directly from that clip window.

Here is the video that the YouTube Blog uses to show off their new addition, and, following their lead, I will too:

More details inside

And, if you don’t want this new feature popping up inside your video after it is done playing, you can disable it by simply adding ‘rel=0′ into the embedded video code. This is a fairly easy step to take if you don’t want people to have easy quick embed or URL copying access. For example:

http://www.youtube.com/v/dGAL2wWctIIrel=0

I would rather just keep the new option in, since it works well and is pretty slick too.

Also fairly new is the Active Sharing, which is still being tested:

Are you a video trendsetter, an expert at finding the cool stuff on YouTube? Now you can share what you find immediately by Active Sharing with other YouTube users.

Click the “Start Active Sharing” button, then go watch some videos. Your username will show up on the page of the videos as you watch them, and a list of the latest ones you’ve seen will appear in your profile.

Over at YouTube’s TestTube, cool features such as AudioSwap and Streams 2.0 are also being showcased. Head to their page to check them out!