Meebo Rooms are multimedia-capable chat rooms that can be put anywhere on the Web. Visitors to any site that embeds a Meebo Room are automatically added to the room's buddylist, so they can instantly chat and share content with other users.

Let Meebo Chat Room:

• Transform your site in minutes with "live" community messaging rooms that your users will love.
• Meebo serves the room into your site and Meebo take care of all the messaging traffic. And it will mean you can save your website bandwith
  
• Social and server-based moderation features ensure good behavior.
• Users spend more time and consume more content, so your site metrics go up.
• Embed functions let your users spread your brand across the Web.

Vivo YouTube Watch & Download Plugin is not a common Joomla plugin to embed video streaming content like other plugins. Instead it will also at the same time provide a download link for your user to download  the video from your website.

For example: http://www.youtube.com/watch?v=pdZKOfYOt0M
After you install this plugin and enable, you will need only to write below tag syntax into your article content.

And below is the example of how your web content will look like after that: