I've been a member on this site and INTPc on and off for over six years and here is what I've noticed about regular members. I would think that at least one of the following characteristics accurately describes most regular members.
-They have escapist tendencies and try to use this website as a sanctuary from the problems of real-life they deem to be overwhelming.
-They generally have poor interpersonal communication skills, have very few friends and if they happen to be outgoing, most people in their social network see them as tactless, self-absorbed and annoying.
-They have been diagnosed with a personality disorder that compounds their troubles relating to people. Commonly, such disorders are that of anxiety, depression or ADHD. The frequent users who do not have a personality disorder are often deeply disturbed or traumatized to the point where they struggle to find their niche outside of the forum.
-They are generally not well-educated and do not enjoy doing intellectual work in their spare time, albeit they'll try hard to seem as intelligent as possible on this forum. They read very little and their critical thinking skills are quite weak, so they resort to making ridiculous typological stereotypes and remain unaware of the obvious problems with their statements.
-They typically have a very low self-esteem and therefore cannot come to terms with who they are in real life. Hence, they construct an internet persona that represents their idealized self-concept or basically their persona is the person they wish they were in real life.
-They are either troubled high-school kids, confused college students, unemployed professionals who are also often at mid-life crisis, on disability or welfare or stay at home wives/husbands. In short, they heavily rely on the social acceptance at this forum because they can't find a professional vocation or a hobby that fulfills that need.
-They generally have very poor self-control and can't resist the urge to get into bitter arguments with complete strangers over relatively minor issues.
Feel free to continue this list for me.