Systemli.org runs a so-called Paste-service. This enables you to publically file a text document and send the link to a friend. You can choose for how long the filed text is accessible (e.g. self-destruction after first reading, after 5 minutes….)
For this purpose we use the software ZeroBin, so the servers hosts (us) cannot read what content you file.
Of cause, like with all services, the transmission is encrypted.
This software is in an early stadium and it is not sure if we can offer this service for ever.