YouTube has launched a new service called AdSense Players.
In order to use it, you need an AdSense (Google) account and a YouTube account that can be linked.
With AdSense Players you create customized AdSense-enabled video players for publishing to websites or blogs, using keywords or pre-selected premium content, like you see below:
AdSense Players is very easy to setup in 4 steps:
- Player Information:
 Enter a name and description for your player. This information will only display in your "My AdSense Players" page to help identify the players you've set up.
- Theme: 
 Select a color theme for your player.
- Layout: 
 Select a layout for your player. The layout option is only available when you first create a player. Once you've chosen a layout and saved the player, you won't be able to change it.
- Content: 
 Choose the type of content for your player by making an appropriate selection:
 - Automated Content: Enter a set of keywords and YouTube will automatically populate the player with related videos. 
- Choose By Category / Provider: Choose content by Category or Provider.
 
You can change the colors and contents of a player at any time, and all instances of that player will automatically update to the new settings.
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