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Stalkers are lonely and lack self-esteem, yet they feel very, very important. From the WebMD Archives. It seems to be the price of celebrity: The stalker. Catherine Zeta-Jones has received threatening letters from a stalker who is infatuated with her husband. David Letterman has lived with it for years.
However, many of these tricks are being used by more people every day to protect themselves online, by making sure that their Internet activity is nobody else's business. This keeps them from being harassed by cyber-stalkers, bombarded with online advertisements, or even censored by their government.