Кто-нибудь использовал Diaspora?

сделав её изолированной от всей остальной сети? Это вообще возможно?

https://wiki.diasporafoundation.org/FAQ_for_pod_maintainers#Can_I_make_my_pod... :

Can I make my pod private/isolated/not communicate with other pods?

No. diaspora* is built around the idea of a distributed social network. We want to built one network, not enable special interest communities or companies to host their own social network (We do welcome you on diaspora* though!). A large amount of the development effort goes into making that one network possible and the whole user experience is designed around it. This not only means that the other existing solutions to built your own private network often have way better to your usecase suited feature set, it also means that if we would implement a switch to turn communication with other pods off, there would be many open ends in the user interface, yielding in a bad user experience.

Кто-нибудь использовал Diaspora

Не нужно с кучей заброшенных профилей. И огромным разбросом «по сайтам сателлитам»

Бложик хочешь ты)

Не, бложик я тоже хочу. И я его постепенно пилю.
А диаспора мне для другого нужна была.