Yeah, the realer the better, I think.
For one, it's actually easier to remember things that way, and there's less suspension of belief. I mean, players will known there is say, not a TV channel called ABS or a news service called "Routers".
Also, there's more horror that way. I mean, it's one thing for the PCs to have to listen to a fictional popstar named Candy Bubblegum (ok, I'm not great at names), but using Britney Spears conveys the true sense of horror and dread.