Searching for (Unintentional) Supporters of Spyware? Try Google

It’s a journalistic dictum that, in order to get to the bottom of something, one should follow the money. Spyware researcher Ben Edelman used high technology to discover who is using that hated method to advertise, and thus keeping spyware makers in business. This led to a chain of money whose links may surprise you — and illustrate a larger issue in the tangled web of online advertising.
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