The listing, Redux Beta Invite has ended.
Redux is a community for sharing media content with others. Much like Tumblr or Soup.io, but with different approaches and techniques in various areas.
You don't post stuff, you share it. You don't repost, you give props or comments.
You can build groups for specific topics or build a network of friends to prefilter the 'everyone' stream, which will be quite crowded soon.
The (time) killer feature is the tv mode where you get an endless stream of videos from the public posts. It's amazing how you can forget about the time with that.
http://www.readwriteweb.com/readwritestart/2009/10/use-redux-and-bypass-bitly-for-better-twitter-discovery.php