Seems like there are quite few posts about iMessage but I didn't see a response to this question. Apologies if it's already been asked and I missed it. I have a bunch of friends and family with iPhones and iPads who are yet to update to iOS 5 but will likely be doing so soon. My question is how will users know to send an iMessage to the Apple ID as opposed to the iPhone number that is normally used for texting? Reason I ask is that it appears that iMessages must be sent to the Apple ID to sync across devices and I was curious if there was a way to ensure that the messages sent from other iOS devices are sent to the Apple ID and not my phone number?