[exch]

[unsubstantiated armchair physics ahead]

One benefit of this approach I can see is that you don't, in theory, need transmitters and receivers to be in line of sight for a clear signal. If you are doing standard radio transmissions, it helps if there isn't a planet between you and the transmitter. With entanglement equipment on both ends, this is irrelevant.

You will also not be bothered by signal degradation. The real head-scratcher of quantum entanglement lies in that it works over any distance. The 'transfer' of state between particles is identical, whether the twin is sitting 1 meter or a million light years away.

But as the other commenters mentioned, you are still very much bound by the speed of light. So propagating state changes between entangled particles separated by 1 light year, will still take 1 year.