Just to throw this in, the air cards are not perfect.
I have had varying performance in California and in NYC, all depended on where I was and what tower I connected through. I noticed in some places, Denver for one the performance is rather poor because of the routing they use for the system. I would watch the packets go out and high latency somewhere near my connection.
I am told by AT&T that it depends on who owns the towers and how the digital signals are passed to the internet, there are sometimes serious bottlenecks even with 100% signal.
I want to know Lawrence if there is going to be a mobi version of EO for us who like to use the phone to surf the web?