Board Thread:Fiction Universe Discussion/@comment-4242472-20150504003042/@comment-47205-20150521093639

Assuming there are no physical barriers to internet-style intergalactic communications, I would expect the main divisons to be unofficial cultural and xenopsychological ones based on how well individuals can relate to each other, rather than a literal case of certain groups of people only having access to certain media.

However, much like on modern-day Earth, some nations would try to control the flow of information into and out of their borders and so there would be some nation-specfic media (e.g. propaganda channels, localised social networks) too.