I love joe, but I'm sure I would be fine with vi if I'd learned it (well) first. I use joe because it's small, fast, functional, and easy to use. On that scale,

joe > vi (not easy to use) > pico (not functional) > emacs (not small, fast, or easy to use)

I would have assumed most joe users felt the same. If I don't have joe, I use vi. I'd never dream of installing emacs or pico on a system I couldn't install joe on for some reason.

True. However, according to the full specifications, the phone does not support the frequency band used by T-Mobile USA for HSDPA.

You could also skip flash entirely and buy a very small hard drive. I've got a 60-gig USB drive from Apricorn that I carry around in my pocket, with an AES-encrypted root filesystem. Performance isn't spectacular, but it's certainly usable.

One thing you have to remember is that 500k people signed up in TWO DAYS. They decided to cap the number of sign ups at 500k. So, they probably could have 1-2 million (or more) sign ups had they not capped them at 500k.