Two security researchers gathered the information from 'clickstreams' of people's web activity.
Clickstreams are records collected by browser plugins and other services.
This data is used to target advertising campaigns and is not meant to record any personal information that could be linked to an individual.
The researchers found, however, they were easily able to link the information to an individual.
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The worst offender was a surfing tool called Web of Trust, according to the experts.As well as our free messaging system we also provide all users with access to our gamer dating forum and chat room to discuss whatever topics you feel like - not just games!So whether your a single gamer girl or guy or just like your partners a little more geeky than most - sign up now, it's quick, simple and totally free.If you're looking for a nerd boyfriend or girlfriend youve come to the right place!Free nerd dating is the number one place to find single nerds just like you.They did so by analysing information from clickstreams, records collected by browser plugins and other services, of people's web activity.Data gathered by these plugins is anonymised before it is sold to advertisers and is given a customer identifier number rather than an individuals names.We also have a free gamer forum and chatroom to discuss and meet like minded single gamers.Communicate freely with other members without having to give away your personal contact details using our internal messaging system.By comparing this public information from named individuals with the private anonymous data, it became possible to link the two.This allowed them to trace who people were, sites they had visited, and products they had purchased.