HDD = Hits Daily Double http://www.hitsdailydouble.com/
KAndre's definition: HDD is one
of the older and "more reliable" music industry gossip rags, lots of
insider info - but usually have excellent rough estimates of CD
sales...they got updates throughout the day on Tuesday and Wednesday
and we used to watched the numbers roll in. Click on the hillbilly's
bouncing head, give a fake name and company and a dummy spam email
account and you're set to go.