Thanks! I have been into radio for a long time (33 years and counting), and have been hanging out on here for three years (long beta!). Most of my contributions so far have been in flagging questions/answers, and retagging questions.
Question tags are a pet peeve of mine. It frustrates me when a question is posted with no consideration of how it should be tagged. Tags are there to assist other people who are trying to find questions that might be relevant to them. It doesn't take much to think "I am asking a question about propagation, so let me add the 'propagation' tag". That way, we have all questions about propagation grouped together.
That's my pet peeve anyway. Expect to see me continuing to retag lots of questions from now.