If you're too stupid, or not paying enough attention to see that someone is following you then it's your own fault.Think of it as someone following you home, you're too stupid to see him so he finds out where you live.
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There are some things that makes tagger undetected like big client/server lag plus tag given in last seconds before leaving town and click in the last seconds before window with buttons will disappear. If someone has tent/base too close to the city and is in hurry he could be easily raped.