I've seen a few articles on the subject. At the moment it is speculative, but there is some concern that the implied information transfer (the "entanglement" part) operates too fast. I.e. faster than the speed of light - and that's the "spooky" part. But since that fact is very tricky to measure, it remains speculative at this time. If it is ever found to really be that fast, it means that the speed of light isn't the limit that many scientists think it is.
Both philosophically and technologically, the world would explode with new ideas if it can ever be proved to be hyperluminal in operation. Because of course we would immediately try to exploit the speed.
