I had my original 2G iPhone for three years before updating to the iPhone 4. During that three years, I only used about 4 GB of cellular data, so I thought the whole "no more unlimited data" business was blown out of proportion. Of course, with my old iPhone, I didn't have 3G, so I didn't stream a lot over the cellular network. I decided to try streaming music in my car for a few days on my one-hour-each-way commute to work and back. I used it for about a week, before switching back to my iPod. I just checked my data usage, and in the three weeks or so that I've had my new iPhone, I have used 4 GB of data already! That's right, in three weeks, I used the data that I took three years to use on my old iPhone! My data usage multiplied by 52! That's crazy! Streaming certainly does make a huge difference. How much data do you use? I just thought I would pose the question.