Ever since Apple announced FaceTime for iOS and then Mac, millions of users have been using it.  It is used around the world for business, personal, or anything else in-between.  But at the same time, Apple has some users believing that FaceTime is the only solution for iOS (thanks to their clever marketing).  Even I didn't know that their are other (and more advanced) chat apps out there for iOS and Mac until I had customers that needed me to chat with them on devices other then iOS and Mac.
Besides the usual services such as Skype, PollyCom, and others, Google  has a very good chat alternative called Hangouts (formally called Google Talk).  The service is free and has more features then iOS's FaceTime and also works on all platforms.
The set-up is a snap, and you'll be chatting with other Google Hangout users in no time.  Just go to http://www.google.com/hangouts/ and download the add-on application for your device or Mac.  Once downloaded, double click the .DMG file and follow the screens.  Once installed, follow the screens again to sign in and start chatting!
The makers of the ever popular Angry Bird game and others has added the ability for players to save where they left off in a game, and then be able to pick up where they left off on either another device of the same operating system or others.  Users have to go to the company's Rovio Account option, sign up for an account, and then follow the directions to enable the ability across what ever device(s) they want.
