Poll: What is your favorite messaging app?
Obviously, there are options that are tied directly to the platform you chose for your smartphone, like iMessage and BlackBerry Messenger. There are also the cross-platform crowd, like Google Hangouts, Facebook, WhatsApp, Skype, Viber, and Snapchat. Then, there are the old faithfuls, the traditional services, like SMS and email, that still work very well despite the glut of new competition.
So, what's your favorite messaging app? And, of course, we'd love you to sound off in the comments as to why you prefer what you do. (Please keep in mind these are opinions, not facts. What you like may be different from someone else, but that doesn't make them wrong.)