I do think that you have a good point on posting smart. It should be said for any internet site that you need to be careful with the information that you put online as there will always be people out there willing to take advantage.
You should never share exact details of location or personal info.
I wouldnt be too worried about people seeing my account as even in life you can see where the money is by the house, the car, the clothes. And as steem gains value a lot of people will have large accounts.