On the other hand, if some company have all my data and knows what I would need when I need it, it'd help me save tons of time browsing irrelevant information.

On the other hand, if some company have all my data and knows what I would need when I need it, it'd help me save tons of time browsing irrelevant information. I hope they can get better doing that. e.g. Yelp has tons of information about what restaurants I like and what I dislike, they still gives me tons of useless recommendations.