Sam Anderson has an article on Slate regarding NetFlix voyeurism. It's actually quite interesting, because I'm always interested in the types of movies people watch, books they read or music they listen to. I feel it gives a little insight into their personality. However, as a Netflix friend, you would get to see not only what they say they like, but what they actually rent. It would be like giving people a peek at my Amazon purchases and wish lists but without all the gifts purchased (since you don't rent gifts, I hope). So, the sample is a little more pure or uncontaminated. Of course, there are always the movies that you watch because everyone is talking about them and you want to be "in the know". However, when you rent the cheesy dreck 5 times, your friends would be "in the know". Do you like sharing so much information with everyone or do you keep your privacy a bit?