I noticed mine uses oil as well. I check before every ride and top off as needed. There is no indication of a leak nor any smoke from the exhaust so I am not sure where it is going.
EDIT: I had been checking my oil level regularly and thought it was getting lower, however when I checked it today it is at the same level it was when I last changed the oil. I am thinking that it simply did not drain down for some reason when i checked the level before.