Google and Facebook are two of the largest and clearest monopolies in the world, and between them, the harvesting of your personal information goes far beyond what most people realize was even possible.
I have recently removed Google Search from this website and replaced with a search engine without the privacy concerns, but has similar capabilities. The search bar at the top of the website is the most used and essential feature for you to research the many thousands of pages I've published over the last 20 years.
Google catches every single thing you do online if you're using a Google-based feature, and Facebook has a record of everything you've ever said or "liked." All of this data is being used to build very powerful personality profiles that are sold for profit and used in a variety of different ways. As previously reported by Gawker:1
"Every word of every email sent through Gmail and every click made on a Chrome browser is watched by the company. 'We don't need you to type at all,' [Google co-founder Eric] Schmidt once said. 'We know where you are. We know where you've been. We can more or less know what you're thinking about.'"
Facebook Sells Your User Data, and It Can Be Used Against You