I just love all the parenting advice on here, especially when unsolicited. I have a 7 and an 11 year old, both with droids. Both have summer camp and after school activities. And yes, I do trust them, but there are a lot of wackos in the world that i don't trust. Sure, a kidnapper can throw out the phone, if they know they have it, I loved having chaperone on their other phones, and have also been looking for a good replacement. There is no perfect way to protect your child, but I will take all the help I can get, especially in this day in age.
Thanks for the recommendations from all