You write a message, and Mixcard sends off a postcard to your recepient with a QR code for them to get their mixtape.

FORBES: Six Apps And Websites For Music Lovers

It tells how agents write their message using a Pentel Rollerball, then press it against a fresh piece of paper to transfer an invisible message.

BBC: Spy tactics revealed by book

The only way to send a text message was to write a letter and slap a stamp on it.

FORBES: Transforming Telecom

You have to pick the right one, and then sit down and consider that person, what message you want to write to them.

CNN: Can postcards survive in the digital age?

The site isn't designed to receive large caches of documents, so someone sending a message would have to write that they have documents they'd like to send, and then 100Reporters decides whether to provide that person access to transmit those documents.

CNN: See yourself as the next Assange? Good luck

"If you write the text you're totally controlling the message, and Gov. Cuomo has been particularly cognizant of controlling the message and controlling the flow of information, " said Douglas Muzzio, a public affairs professor at Baruch College and one-time campaign aide to former New York City Mayor David Dinkins.

WSJ: Cuomo Staff Penned Praises for the Boss

That's the message of a trio of pediatricians, who write this week in the journal Pediatrics with a clarion call to other family doctors and child specialists: stay alert to the signs of psychological maltreatment.

CNN: Belittling kids as harmful as beating, study finds

Zipwhip were able to write computer code to interpret the instructions sent in via text message.

BBC: Zipwhip's Textpresso

They can use that to write papers, explore the Web, play games and instant message their friends.

FORBES: Magazine Article