It can be a good thing and it can be a bad thing. If you do not care if the entire internet can access information about you then it is a good thing. If you do not want your information all over the internet then it is a bad thing.
I am glad that my picture and other personal information is not posted. I choose to keep it that way. I have had run ins on here many times and thank God my inner voice had already told me that I should not post any personal information or my picture. I sure do want some sickie showing up on my door step. It happens every day all over the world. Internet stalking should be a crime punished severly and also the stalker should be forced to seek mental help for the rest of their life so they can be monitored to make sure that it does not happen again.