Hey everyone. I'm looking for a BBM-type/SMS replacement application that I can use to message other iPhone users for free. I've searched around the forum and I see a bunch of threads announcing new applications and some peoples' favorite apps, but they are all either old or started by the developer of the app. So, I was wondering if there was a consensus about what the best app is. Is there one that has overwhelming market share? Is there one I should stay away from for whatever reason? I know of Ping!, Hello!, and WhatsApp, but I'm sure there are some I am missing. Also, in the case of WhatsApp winning me over after this thread, is it true that I'd need to format ALL of my numbers in my address book as starting with +1 because it needs a country code?