Official site says.. "With OS X Yosemite and an iPhone running iOS 8, you can send and receive SMS text messages right from your Mac. So when friends text you regardless of what phone they have you can respond from your Mac or your iPhone, whichever is closest. All the messages that appear on your iPhone now appear on your Mac, too, so your conversation is up to date on all your devices. You can also start an SMS or iMessage conversation on your Mac by clicking a phone number in Safari, Contacts, Calendar or Spotlight." Honestly not a fan of the appearance/design of Yosemite. The new dock and those new icons look hideous. BUT, one Yosemite feature that I'm really interested in is.. being able to receive and send text messages with green bubble friends on my Mac! I'm just wondering how this works exactly. Say for example, I have an iPhone with iOS 8.1 (Monday), a Macbook that I carry around, and a Mac desktop at home, with all my devices logged into the same iCloud account and set up with the same messages account... How are the SMS relayed across all devices? Via wifi or bluetooth? Is a copy of the green bubble conversations put on the iMessages/Apple server? I'm asking because I'm curious to know how the conversations stay "up to date" and in sync. Is it the entire conversation, like every single message, or just when I have all three devices turned on and in use? For example, if I go out to work with my iPhone and Macbook.. would my received and sent text messages also appear on the Mac at home while I'm gone?