Take a look at The Big Mashup on sun.com. It explains how mashups that feature content from various sources in the form of video, text, music, and such demonstrate the Participation Age. The launch includes a video from Sun's Chris Melissinos, which discusses how the network is ushering in a new phase for entertainment and news, also blogs by artists, musicians, and TV personalities.On the right nav is a Snapp Radio from Sun Labs. To quote the description, "When you listen to music from Radio Paradise or last.fm, Snapp Radio will collect images from Flickr that are related to the music you are listening to and display them as a slide show." Wow, pretty neat.

As related reading, here is the announcement from Sun.