Newbies to this forum are in categories, because we can have some to come here for an enquiry and once they got the required information needed, then they take a leave, while on the other side, some would have been here by friend(s) referral and got introduced to the forum, which they may obviously stay, the last set are the coincident users, who will by chance come across this forum online and try to develop interest, learn and remain or leave if they found it being too strict for their leniency.
You forget to add the set of newbies who only happen to discover this forum when they have been scammed or are confused about what they are doing online. They come here to ask questions, and when their curiosity is satisfied, they take a leave and continue with their life outside the forum and will only come back when they have something else they want clarification on. They are the set of people that only want answers but don't provide any benefit or help to others.