The best products for me are typically not what "the masses" are choosing. How horrifying to want to be just like everyone else; a faceless drone doing and buying what someone else tells you is cool.
It is your right to be atypical, but someone -- somewhere -- wants to know what even you are buying. Analysts get paid bazillions to stand around in malls and literally watch what people are buying. And then they get paid bazillions more to stand around in malls and watch what people are returning. Information on buying habits is absolutely priceless to those who care about it; your pals on your social networks might not care, but whose to say Apple isn't going to take this information and sell if off to people who do? They're in it for the bazillions of $$ afterall.
Not to mention word-of-mouth is among the cheapest and most effective methods of advertising. If I'm looking for a new product -- say an iPad or whatever -- I might, just might, take to heart what my good friends think about it. And I might be interested in whether or not they actually bought one, where, and why.