Online Privacy and Web 3.0

So we are all worried about the Googles, Facebooks, eRetail sites that collect our information and monitor our activity on the internet. But this is old news and I guess unless we are really careful to unsubcribe and notify these companies to withhold our online activity it is inevitable that we are all being tracked. But at this point in time, it benefits the business rather than the consumer. If you are going to take my personal experience in the web and put an algorithm behind it to figure out what I want to buy or how I interact, then wouldnt it be better to bring this back to the user's experience? Confused? For example, say I go to CNN.com and click on a few articles regarding Iraq, Technology, Financial Markets in China. Over a period of time through constant clicking through these articles, couldnt CNN possibly understand my news preference? I know we can all sign in and choose which news we are interested in, but half the time, I dont even know what I like. I call this web 3.0 where I log into the website and instant gratification!!! News I like to read, articles I want to see. No i didnt have to type or do anything but based on these HID applications, the news is selected and displayed to my liking. Now thats really giving back. Sort of what they do in Vegas by letting us reside in opulence despite stealing all our money on the roulette tables.