the company tracks and uses your Web history to create a digital picture of what you probably look like. […] “If you’re reading something about curly hair, we can see that.” Gumgum can then pair that data nugget with all the other crumbs of personal information you leave around the Internet—where you live, your gender, your income level, and how often you visit the websites GumGum tracks. Then it uses all that information to decide which ads to place in front of you.
Für Werbefirmen ist das Business as usual. Der einzelne User kann sich aber eigentlich ganz gut vor Tracking schützen.