Many people have noticed that Facebook's advertisements will cater to your personal interests.
Say you search a pair of boots you'd like to buy online. The next time you log into Facebook, you may notice and advertisement for boots.
Now, people are wondering if Facebook is actually listening to people's conversations, in a form of eavesdropping.
A University professor was the first to float the idea, and Rich Demuro took a deeper look during today's Tech Report.