Hey there Guest,
Welcome, and thanks for visiting our community! :)
Use our forums to connect with other users, talk about your adventures in Terraria, post questions and answers, talk about things you'd like to see in the server/community, etc.
Well-Known Member is not game based, it is forum based. It is determined by the quantity of your posts on the forum, not the quality or content. It does not differentiate whether you are well known for good deeds or constant spam.