I like the concept. though I think the layout needs a bit of work though. I would want to be able to see a bit more information in the presentation in a final product, maybe decouple the navigation from the feed so the size of the views aren't tied to the size of the timeline bubbles. It would be an interesting navigational element though.<p>Also it seems to crash entirely when I post an empty form. Which is no big deal since it's a mockup but still..
timeline: like! i wish more news sites presents history in a straightforward manner
colors: not so much; not meaning & some combi are hard to read; favicon/logo/color-scheme-based-on-logo will be more useful
http: if the form method is "GET", then I can easily share or bookmark for updates later
text: some body text will be nice