It may never have occurred to you, that your web experience is being tailored to your views. This might not bother some people, but I find it a bit troubling. That might sound like a good thing at first, but if you consider that information that you might not like, but would still rather be expose to is being filtered out before you have the chance to decided if you want to see it or not.
This is the filtered bubble that is your internet experience. This TED talk gives a really good idea of what and why this is happening. I have long believed that we are further apart on political and social issues, there is a greater divide, because we have many news outlets (radio, tv, and print media), that are producing content to suit a certain segment of consumers. Thereby, not providing truly balanced or diverse pieces. This has the effect of consumer only tuning to outlets that pander to the views they already hold.
Do check out that video, it is pretty interesting.