repeating your greeting (opens in new tab)

Let's say you're out and about. Do you greet people as you pass them or they pass by you? If so, how did you choose to greet them: a nod of acknowledgement, a quick hello, typical small talk, a meaningful bid for conversation, or even a hug for a good friend? You somehow encounter them again. Do you greet them again? If so, how do you go about it? If you encounter them again and again, do your greetings persist or change? How does greeting people the first time or on repeat go for you in diff...