NASA Announces Discovery of Flowing Liquid Water on Mars

It sounds like the "flowing" descriptor is being improperly used according to the chief scientist.

Think of this as a "seep" not a flow. We have not seen flowing water on the surface. We see something that darkens the soil, which may be just a wetting action but still involves (briny) liquid. -RZ

This is still really cool though. Here is an AMA that a few from the team did on Reddit today.