Originally posted by Izzy great site, but I am not sure if it applies to us Canadians
I could be wrong, but I don't think there is a rule against photographing people as long as you don't publish them or do it against there will. I would NOT under any circumstances, photograph any children without the parents permission first, especially myself being a male. It just takes ONE person to get the wrong idea and you can guess the results.
If you are going to publish, even on a website, I think it would be best to have a waver with you. Best to cover your butt, just in case, IMHO. My friend who is a pro wedding photographer always gets permission to publish a photo, even his friends.
cheers