How the social media learn from us

Tell me the company you keep and I'll tell you who you are... and what you want. Web applications are becoming everyday smarter: Amazon guesses books we might like, YouTube proposes us videos of our interest and Facebook finds our friends before us. Nowadays the web is plenty of start-ups using its 2.0 interactive power to create new recommendation-oriented products. Teaching a machine to learn is definitely the new frontier of online implementation.

Memory on demand

Why should we keep in mind an information if something else do it for us? How can we even remember a thought without a moleskine, a travel when we forget the camera at home or even a party if there is no friend to recall it?