Do people actually put their real names in those forms? Even if they did is John Smith from the United States really going to help you track the guy down.
BMI is a bogus and misleading measure. Try percent body fat instead.
for the vast majority of people who aren't body builders it's fine and it's easier to calculate than body fat percentage.
Everything is copyrighted by default. Online papers might want ad revenue from clicks, but how on earth will I reach them if it's never linked anywhere(assuming I don't know their url off the top of my head)
If nobody cares then why are they taking the pictures? Perhaps for popular tourist attractions it makes sense, but what legitimate use would someone have for viewing a residential neighborhood? I don't know whether it should be illegal but I can see why people wouldn't want their private residence plastered on the internet in an easily searched database.
To give parents who don't have time to play video games a general idea of the type of content in them so they can make a somewhat informed decision about whether they want their children to play the game. If nothing else it certainly wasn't made so the government could fine children $25 unconstitutionally.