Change the tracking level "default"?

Speaking of defaults:

  • “regular” is the default
  • to change a topic from “regular” to “tracking”, one of the following must be true:
    1. manually switch it via the control at the bottom of the topic
    2. read the topic for more than four minutes
    3. reply to the topic

So unless you are replying, or reading the topic for quite a while (you can adjust the time interval for this in your user profiles), topics should not show as tracking.