Interaction

How do you interact with people online? Short and sweet. I'd publish this on tumblr but that's where I'm having difficult navigating the etiquette. You can follow people, like things, and such BUT like in real life, how can you do so without it being awkward. That's the question. I don't expect an answer or anything. Just wondering. I'm taking the approach of being overly cautious and polite, which is my standard approach.