I have just had the most hilarious recounting of a good friend's experience in unlocking their O2 iPhone: if you buy the device and unlock it you avoid the £35 per month or more for 18 months. Suddenly the iPhone seems like a far less expensive proposition.
It took my (not particularly geeky) friend 4 days worth of reading up of the topic and then four hours of tense, nervous tweeking coupled with a heart stopping moment when for all the world it looked as if the iPhone had just died.
He did it though and not has his existing SIM working perfectly within the phone.
It sheds some interesting light on this article yesterday from the Register which indicates that just 26,500 iPhones have been activated in the UK which compares to first weekend sales estimates of over 100,000.
Surely seventy-five thousand people haven't hacked the iPhone? But then again I was really surprised that my friend had, so who knows...