Extremely reputable, and you if you look at otcbb.com, the official site of the OTC market (BB and PK stocks), you'll see the same short position as it's reported on a semi-monthly basis.
It has a lot of information that will provide an answer to your question and help explain my the "publicized" CDIV short interest is so low even though the team owns way more than the float (i.e. due to naked shorting by the MM's).