It's also very tiring that people keep needing to be reminded of the fact that no, faster-than-light communication is still not (and never will be) possible.
(Which really does leave us back at this question: if it doesn't get us faster communication, then what advantages do we think quantum teleportation is going to get us?)
I believe currently its most useful property is its ability to detect eavesdropping. With classical information, it is possible to make a copy of information you observe without being detected. With quantum information, the act of observing changes the state, so eavesdropping can be detected somehow[1]
> An important and unique property of quantum key distribution is the ability of the two communicating users to detect the presence of any third party trying to gain knowledge of the key. This results from a fundamental aspect of quantum mechanics: the process of measuring a quantum system in general disturbs the system. A third party trying to eavesdrop on the key must in some way measure it, thus introducing detectable anomalies. By using quantum superpositions or quantum entanglement and transmitting information in quantum states, a communication system can be implemented that detects eavesdropping. If the level of eavesdropping is below a certain threshold, a key can be produced that is guaranteed to be secure (i.e., the eavesdropper has no information about it), otherwise no secure key is possible and communication is aborted.