Spies Like Us by CoolCatTeacher (Vicki Davis) was an almost scarey posting to read. I already knew about some of the problems that misuse of technology could cause, but now I have a whole list going through my mind. I personally have had a student, or somebody, get my cell phone number and leave threatening voice messages and text messages. The scarest part is that someone can block their cell number and then you have to get a court order to find out who it is.
We have also had students create web pages as if they are a teacher and make that web page inappropriate to get the teacher in trouble. I think that is the real downfall of technology progressing so quickly. Someone can take your name, make a website or blog about whatever they want and no one can stop them. I honestly don't think there will be a way to stop them because they will be protected under freedom of speech.
The best way, if not the only way, to protect yourself is to google yourself every couple of months or so.