This site lists the communities on -shall not be named- that have either migrated or are also located on different sites. It also lists whether it is the official community or a spin off. A very helpful tool for those who have rid of -shall not be named- and have forgotten communities they once followed.
Ah the good tool that mixed up star wars/star trek and privacy/piracy.
Totally not a random list of subreddits and similar communities with no relation between them.