Timothy Ferriss

I might seem biased, but I use Evernote every day. It came to me through my readers, who I'd asked for software recommendations via Twitter and Facebook. For seemingly every function, the answer was 'Man, you have to use Evernote.'

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.

Every time you log in to Facebook, every time you click on your News Feed, every time you Like a photo, every time you send anything via Messenger, you add another data point to the galaxy they already have regarding you and your behavior.