A small social site is growing fast.

So how does a publicly held Facebook act different than a privately held one? Also, crazy hummingbird robots fly in formation!

Everyone needs enormous piles of cash, evidently.

The new feature is unpopular among nervous users.

Some of them, sure. But it can be hard to tell which ones.

Pentagon indicates unmanned aircraft are the future.

But at least you get some control of your profile.

The Fourth Amendment applies even in your car, says SCOTUS.

But how realistic are those ambitions?

A new book explores the digital trail you leave behind online and what advertising companies are able to determine from it. Also, tablets and readers spike up dramatically.