Sending confidential information such as passwords, account information and other sensitive data in emails and IM is not necessarily safe. That data is typically stored with remnants of the bits in places you don't need it to be.
Click the blue button. Paste something private. We'll encrypt it and give you a unique URL that you can share.
Your data is encrypted from you to us, and stored encrypted. We couldn't even tell you what it is -- even if you asked.
Once someone visits your private URL you provide them, the information is unlocked and the message is deleted into the digital ether.