MN is not off-the-shelf software to my knowledge but is developed inhouse and has evolved through the years.
Unlike off-the-shelf systems a users post count is not displayed so I feel that makes it easier for a newbie to just leap into a conversation and if they say something useful rather than spam they may be instantly accepted as someone with something to contribute on that subject.
Post views are not helpful in my view, while handy for statistics, advertisers, for most users I don't feel it helps and it can be depressing to see a viewcount yet get no replies.
I hate introduce yourself boards, I like to keep people guessing.