PoPSiCl is a cloud-based privacy-enhancing technology. A user can register a personalized pseudonym for a server in the cloud (a PoPSiCl), and later access that server using the PoPSiCl without revealing the true identity of the server to network attackers and eavesdroppers.
PoPSiCl is fast (minimally more expensive than HTTPS) and compatible with modern browsers (with no extensions or other software required). Check out the following video to see how it works!