"Cyberstalking" refers to contacting a person online persistently, especially out of obsession or derangement. For example, if a man sends a woman threatening e-mails or repeatedly contacts her via her social networking page, he could be charged with a felony.
A "Google stalker" is when someone locates you by doing a search on Google and then incessantly emails you. They are said to be Google stalking (or cyberstalking) you.
NetLingo Classification: Online Jargon