I know this has been asked many times, but I have a hard time "crystallising" it in my mind.
First: let's say we teleport a DVD (with quantum teleportation). Isn't this FTL communication?
Second: would it be possible to create 2 quantum computers fully entangled?
If we assume that it would be possible (with the computers in separate locations) then "asking" the first one a question to which we already know the answer, then observe that answer, would the answer appear on the second computer? Would this be FTL communication?
Now I know someone will say, "but the one with the second computer has no way to know if the first one has already been 'observed'", to which I'll respond: if we do systematic observation on the computer, like every x period of time, each one of them is always in sync with their readings.