Probing the Dark Side of Google's Ad-Targeting System

Researchers say Googles ad-targeting system sometimes makes troubling decisions based on data about gender and other personal characteristics.

That Google and other companies track our movements around the Web to target us with ads is well known. How exactly that information gets used is notbut a research paper presented last week suggests that some of the algorithmic judgments that emerge from Googles ad system could strike many people as unsavory.