Profile Points

What is the minimum time between posting so points don't get removed ? A while ago I had a few amplifier discussions and got to around 180 points. As I.m 40+ years experienced I don't need to post that often. Yet when I came back for my next post I had been knocked back to entry level 30 points. Is this normal or a bug, and if a bug can you please fix it ? Also just a thought but given asking each question gives points you could have this absurd situation where a novice or student has a high score, but a busy professional that knows what they are doing keeps ending up back down at 30 so a bit upside down. So if the aim is to encourage expertise (other than TI folk) then might be worth adjusting the algorithm ! Best Steve