Steve summed it up, but the 'data acquisition' as per the helicopter itself is about what it's able to do. That's all going into the pool of knowledge for the design of successors.
Also, after the flying demo proved successful (the original intent), the tiny tot was repurposed as a scout for the rover.
Of course that wasn't in the planning -- the cameras and software weren't geared toward anything but flight (with the camera to document). NASA/JPL just wanted to see if they could fly the thing, so they wanted to keep it as light as possible. But with what it can do -- way more than expected -- it's keeping busy.
Now there are plans for much better cameras, and putting the next one on wheels.
OK, good answer. Thanks.