I think new membership is good for ATP, it adds new lifeblood, however as with someone new or still getting to know the site, it takes awhile for some to be actively posting..some will just lurk a little more and just read. People have different ways of learning and sharing. Some are more expressive of their thoughts in writing..some are not. In time, hopefully they will be more encouraged to participate, a little more fun enabling
I think we all get our highs and lows...so maybe for some months some will stay away..some may return, or some will continue the fun of collaboration and sharing here.
On the other end of the spectrum..well, it is rather hard to really assess and know if a member still is out there or still interested to continue. Life happens. And sometimes as with any group or club we will encounter those that just seek to abuse the group through spamming or what not. So it will be up to us members to inform the rest of us and the admins what is happening if it comes to that point.