I have a wifi only iPad that I use the Messages app. I use it to text friends & family and to their iOS devices. Under the Settings tab, and then Messages settings, there is an option for setting which email address to use for sending & receiving iMessages. My question... Is using the iCloud address any faster than using...say...a Gmail address? My gut feeling is that the iCloud address is the fastest as its less "hops" its got to make. So instead of a message going through Apple's servers, then Google's, then back through Apple. Sending a message through an iCloud account keeps it all in the iCloud servers would, in my mind, be quicker. I could use Apple's me.com email address, for the same reason above. But I've heard that the me.com (like MobileMe) is being phased out. Of course, if I had an iPhone, I would think using Messages with a phone number would be fastest. But I don't (have an iPhone) so that option is out for me. I do however send my wifi only iPad messages to other iPhone numbers that my friends have, should I know they have their devices with them.