They've been caught red-handed editorializing/censoring the Primal feed, and admit that it is structured algorithmically instead of by follows. They call it a “caching server” but that is Orwelliian doublespeak. Because caches do not editorialize or filter. They just prepare data to serve it faster. Though it is called a “caching server” and I have used the same verbiage, it is not actually a caching server. Its most notable feature is censorship.