HOT: Technology, particularly the devices that let us choose how to communicate with people in a number of ways. I can call someone, text, email, or instant message, all from my cell phone. About the only thing I'm missing is morse code. (And I suppose I could tap the phone against a metallic surface.)
NOT: Poor grammar and abbreviations in text messages. Nearly every phone comes with a full QWERTY keyboard these days. Let's use them correctly.