Is it okay if we mention 'SO' instead of 'Stack Overflow' or 'SE' instead of 'Stack Exchange' in question-answer communication on Stack Exchange Network? Which will be more preferred or which is a good practice?
If you are talking about Stack Overflow specifically, you should talk about
If you are talking about the entire network, then you should talk about
Whether you use the full words or the abbreviations is entirely up to you. In certain chat rooms I use the abbreviations out of laziness, because I know everyone in the room knows what I'm talking about. On the public site, I tend to use the full name, because I don't gain much at all by saving a few keystrokes, and using the abbreviation just opens the door to have to explain to someone who asks "What do you mean by