Kym and William, I think we need to draw a clear line between an individual practising a hobby ( I would think that the vast majority of "street photography" would be done on a non commercial basis ) and photo journalism or presenting newsworthy images in the public interest.
Obviously public interest and history changing images deserve to be captured and published so that we all may be reminded of events.
Celebrity stalking by paparazzi and covert snapping of people that may be morally questionable simply don't fall into either public interest or news worthy categories to me.
Also, William, do you not find it interesting that the moral minority that is photobucket has seen it fit to delete / censor several images in that link you provided?