yes, it is extremely dangerous. i have been to many seminars about online predators looking for girls, boys, kids, whatever. it is actually very easy to find someone even if you dont know them. the pedophile can focus in on something in the background of the pic and figure out alot about someone. school, team, etc and find them. It is not only dangerous, it is stupid. there are pervs all over the internet looking for someone to fantasize about. So, yes it is bad and yes they could be stalked. Much more to worry about than being embarrassed....another reason to NEVER give out any personal info online.