When to use someone's first name when you are talking to them (Lessons in Finnish conversation culture)

The answer to this question is quite clear: Only when there's more than two people in the situation and you want to get the person's attention. 

If you say (or write) a person's name too much, you sound like a telemarketer, an overenthusiastic LinkedIn user, or it sounds like the other person has done something wrong.

(Speaking of LinkedIn, this is really funny, especially the last part Jargonoi kommentti: http://jargonaattori.fi/) 

About the author of Random Finnish Lesson: 

My name is Hanna Männikkölahti. I am a professional Finnish teacher who gives private online lessons and simplifies books into easy Finnish. Follow this blog, if you want to be the first one to know when I post something new.  If you want to subscribe to my newsletter, you can do it here.