Dody,
Much better as a river, thanks! Having three columns that force your eyeball to move up and down isn't natural to the way we read
The functionality looks good, I can edit the sources and the styles all on the web interface and I like that level of customization. I'm very simplistic in my design tastes (
http://river.havagan.com/) while Dave likes his beautiful river and feed icons.
Were you looking for feedback?
Minor: Users probably won't understand the difference between the river "Name" (the eventual URL) and the river "Title" -- at least I didn't. It may be simpler to only ask for a Title and just remove unacceptable URL characters and auto-gen the Name (URL) or else make it clear that this will be the URL.
Minor: It was a bit confusing at first why my new river (Guantanamo News:
http://hobieu.apphb.com/r/Guantanamo) had all of the original site content. I thought my river wasn't created at first until I saw the title "Guantanamo" and the Edit link at the top left. After creating a new river can you take me right to the Edit/Sources page for my new river so I can start immediately adding feeds?
A great feature would be to let me enter RSS feeds as Sources instead of only accepting JSONP input. Not many news sites are providing JSON output but there are RSS feeds. You could then simply grab the RSS, parse to JSONP and feed into the river. Google offers an API for RSS to JSON conversion, but I'm not up on the details and whether it can be adapted to your needs (and you have to hope they don't eventually turn that service off:
https://developers.google.com/feed/v1/jsondevguide).
Basically, do what River2 does. ;)
Regards,
Paul