A few people have mentioned how difficult it will be to get people to upgrade to iOS 5 in order to use iMessage. Yes, a lot of people never sync and a few don't

A few people have mentioned how difficult it will be to get people to upgrade to iOS 5 in order to use iMessage. Yes, a lot of people never sync and a few don't even connect to WiFi, but it's important to remember Apple is in this for the long haul. iPhones are going to be around for a while. When my iPhone 3 dies I'm going to go to the nearest Apple store and get a new iPhone with iOS 5 or higher. In other words, even if I don't sync I will eventually be upgrading. Apple would love it if everyone upgraded tomorrow, but they will settle for everyone upgrading eventually.