Overlay networks (also sometimes called, inappropriately, "darknet") are able to anonymize peers and to fully encrypt all messages within a network. Creating a javascript application which is implementing true "privacy-by-design" is not that hard by using the I2P SAM library. This is the core developer of the library showing its usage and use cases. The presentation has the following content: - Motivation: why I2P-SAM got developed (3') - Setting up the distributed overlay I2P network for testing (4') - Creating an application using the I2P-SAM library (10') - Use cases: wide range of peer-to-peer applications (3') - Q & A (5')