* How social network policies are changing speech and privacy norms: (http://www.aljazeera.com/indepth/opinion/2013/05/20135175216204375.html) * Helpful chart comparing various alternative social networking platforms: (https://en.wikipedia.org/wiki/Comparison_of_software_and_protocols_for_distributed_social_networking) * How to create Crabgrass groups: (https://securityinabox.org/en/hands-guide-content/crabgrass-groups)