Dave Winer recently released his most cutting-edge product, RiverBrowser. It is the "river of news" living at Radio3.io, which is his new linkblogging tool, where you can post a link simultaneously to Twitter, Facebook, a WordPress blog, and your Radio3 page.
The RiverBrowser depends on River4 or earlier (e.g. River 3). River4 is software running on the node.js framework that converts OPML subscription lists (of RSS feeds) into a JSON file, that is then rendered as a river of news. Setting up River4 is pretty darn complicated if you are not comfortable with Unix and Amazon Web Services.
You can see the default RiverBrowser at http://radio3.io/rivers/#, which contains Dave Winer's tabs. But you can follow my latest blog and linkblog posts by adding a JSON URL that I've generated in my own River4 installation.
When you're at the RiverBrowser page, sign on to Twitter. Then click on Rivers, and then My Rivers. Click the plus sign, and in the new row, enter
Jeff on the left and
http://river.jeffreykishner.com/rivers/jeff.js on the right. Save, and you'll see a new tab with any feeds that I've added to my OPML file.