She owed her son the respect of having this conversation face-to-face without going out of her way to pat herself on the back by posting it online. Parenting rules are great. Kids need them. The rest of the world doesn't need to know how awesome (if logically challenged) parents think they are.
I think that's the biggest problem I have with it. Our oldest has a cell phone, but not an iPhone. It's one of the cheapest we could get him where he could still text. Its design is slightly similar to a blackberry. I think the phone itself cost us a penny and adding him to the plan was $20 a month so not too bad. It's an unlimited family plan which is nice so we don't have to worry about him texting a lot or people texting him a ton. Other nice thing is that our plan only charges for outgoing texts and calls.
Our rule was you do not take it to school or church, but you do take it with you when you go out to play so that we can call you and tell you to come home. You leave it at home or don't answer in a reasonable amount of time, you're going to be in trouble. When he started failing some classes, his phone was taken away until he pulled his grades back up.
We let him keep his phone in his room at night mainly because he uses it as an alarm clock and we haven't had any trouble with him losing sleep due to calls or texts. We have told him we reserve the right to check his incoming and outgoing texts but thus far he just hasn't given us much of a reason to.
FWIW, he'll be 12 in April. He's asked for a smartphone, since our wireless service doesn't support the iPhones, but we told him he can get one when he can afford to pay for it. I know it's selfish but heck I don't even have a smartphone yet, I'm not going to be beaten to it by my son! LOL!