By Paul Leighton, includes “For all of the attention the tax credits have received, however, there's still one question that hasn't been answered: Who ultimately cashed in on them? … The taxpayers who funded those credits don't know either, and apparently never will. The state Department of Revenue has refused a request by The Salem News to release the names of the buyers, saying that information is barred from disclosure due to ‘taxpayer confidentiality.’ …”