She wanted to watch an episode of The Good Wife that she had missed so she searched in the Safari omnibar for "watch The Good Wife" and the first div under the search bar is an ad to some site that was not CBS that had the Good Wife available to watch via streaming video. To you and I, it's obvious that this "first result" is ad and we would skip over it to the first result. But to my mom, she thinks it's a search result and clicks on it. When she arrives on the site she thinks she's on the CBS site because they naively assumes like many consumers that the site showing the content would be CBS. She doesn't even think twice about the identity. When you are used to TV, you blindly trust that the site/channel showing the content is the correct one.
The only reason I discovered this was because she asked me to pull up The Good Wife to watch on CBS. I, being a savvier internet user, just navigated straight to cbs.com to search there. I got to their Good Wife site and lo and behold, there is no streaming video available on CBS, only teasers and behind the scenes content. I told my mom that "No, CBS doesn't have it on their site" and she was like "Yeah they do. I watch it all the time". I then asked her to show me exactly how she found it on CBS and that was when she showed me that she in fact was clicking on the ad in Google Search between the search box and the search results thinking it was in fact the first result. That's the power of intent and Facebook doesn't have that.