I've been using Feedbin as my post-google feed reader after trying out a few others, and deciding it was worth the basically-nothing a month to support one of my most-used web apps. I've been very impressed so far, and the UI is great (though I'd like an expand all for the sections...).

I think going OS is a bold move, and with a bit of luck (and community interest) it should help propel some interesting developments and keep it at the cutting edge in the post-reader landscape... and if that expand all thing annoys me enough, I could just code it up myself.

Thanks!