Followup.
I'll confine this to technical observations.
- I was unable to make any voice calls on my cell phone. However, I was able to send a couple of tweets via my cell phone, and to read the tweet from @arnold that I referenced earlier.
- Unfortunately, this coincided with a FriendFeed API problem which rendered fftogo unusable. I don't know if it's been fixed yet, but I didn't even try to send anything via fftogo.