[Brian]

I checked with one of the engineers on this. Make sure you have some text from the feed selected before hitting the shortcut.

They've got some plans to change things so it doesn't require a text selection, but it does right now. When I asked whether this was an OmniFocus thing or a NetNewsWire thing, the response was "it's complicated." ;-)

I don't have NNW installed, but he tested in OmniFocus 1.6 on his 10.5 machine and it appears to be working for him. If it's not working for you, let the support ninjas know and we can look into this with you.