I applaud your respect for the effort to become an Ambassador. Personally, when I finally decided to join in the fun of the Community, I made it a point of not answering threads that I had nothing useful to add. When someone asks a question, they don't want to hear "Well I don't have an answer to you question, but...". Nothing builds respect faster than nicely written, well though out, relevant to the thread answers.
As to your question about the line, I believe you have already discovered where it is. :-)
Thanks for caring,