You’ve just bumped into this new awesome group of people. How do you introduce yourself? Just your first name, or your full name? How does this differ if your meeting is a formal one?
I think we only need a last name for official purposes, such as registering for a passport. If you wish to introduce yourself to people, you may not necessarily need to tell them your last name. Unless a name is somehow very high in demand, any two random people in a group will invariably not share the same name.
In my experience, some people do ask for your last name on first meeting, I don’t give it away easily though.
What’s your opinion? How do you introduce yourself in professional and personal situations?