Fast and Furious appears to have been a disaster, but the Justice Department has shared documents freely on Fast and Furious.

CNN: Why contempt case against Holder may be doomed

Kroll investigators shared those documents with authorities in Florida.

FORBES: Facebook Says There's Even More Fraud in Paul Ceglia's Past

Microsoft notes that current Outlook.com customers especially enjoy the SkyDrive integration, with more than half a billion photos and Office documents shared by Outlook.com customers via SkyDrive.

FORBES: Microsoft Signs Up 1.5 Million New Outlook.com Users In Just 12 Hours

The SEC investigated McLaughlin in 2006, according documents insiders shared with FORBES, expressing a particular interest in the constellation of consulting firms that surround the businesses he runs.

FORBES: Sleeping Cops At SEC Give Bio Willie Operator A Pass

Documents can be shared.

ECONOMIST: Microsoft in pursuit (1)

With a virtual 6 x 9 inch color VGA display, a small joy stick and mouse buttons operable by the index finger when using the phone during a conversation the StarTac phone provided the ability to viewed shared subject matter, photos or documents while talking, 15 years ago.

FORBES: The Cyber Display Telephone

Now documents, photos, and videos can be shared simply by creating and sending a link to friends, family, or colleagues, whether they are Dropbox users or not.

ENGADGET: Dropbox simplifies sharing with file viewer and folder links

And in a large corporation or agency, plenty of the documents a leaker might want to exfiltrate are shared among a crowd of users, all of whom have authorized access.

FORBES: My Take On Evgeny Morozov's Review Of My Book, 'This Machine Kills Secrets'

The shared family computer contains a lot of stuff that is mine, including music, Word documents, and photos.

WSJ: Using the Cloud to Store and Transfer Files