Melissa has been wanting an iPhone since the day they came out. I had a Blackberry and loved it, so I was a little hesitant to switch providers and get the iPhone. Today, however, I decided to go to AT&T and price a plan for 2 iPhones. Melissa and I ended up deciding to make the switch. So, that brings me to a question…for those of you out there that have an iPhone, what is one app that I must have?