A Ubuntu menu for your website, simple to install and setup, shows Ubuntu networking icons in a un-obtrusive way.
Ubuntu sidebar is made to promote Ubuntu.
Plugin add Ubuntu media buttons to the right side of your website with style and ease.
The plugin is custimizable and lets you change the icons if you have fancier ones.
How Ubuntu sidebar looks see at ZPop blog.
In serbian at Željko Popivoda blog plugin page.
My other plugins: