"The idea is pretty simple: people who create video, music, photos, audio clips and other personal media can store their stuff for free [...] forever, as long as they're willing to share their works with a global audience" [link]

Err, that includes podcasts I believe -- that's becoming an interesting space to watch, especially following the hype of Evhead's launching Odeo (a hosting/listening podcasts app) and, of course, Adam Curry's BoKu (in podcasts producing biz). All three can be/become complementors, there's more to come, who's next? :)