This is a great and simple graphic that shows how our searches on the internet (Google, Bing & Yahoo's services to be exact) are being filtered by algorithm's that decide for you, what you would be most interested in, according to your internet profile.
Seems great but there's a downside. If all my search results bring up information that reinforces my current world view, then they are, in effect, protecting me from outside information that might cause me to question my world view and grow as a person.
The internet has been a great place for me personally to rub shoulders with opposing and different ideas on life. If I had not run into these differing opinions, then I can't say that I would be who I am today. I like being me, so I see it as a bad thing.