The FAA tells Motherboard that it didn't explicitly mention ads in its notice to Hanes, and that it's investigating what prompted the warning. However, there isn't a lot of room for alternative explanations -- the issue was with YouTube, not the content. Even if the alert was just a mistake, though, it emphasizes just how fuzzy the line is between personal and professional drone use. The FAA may need to refine its proposed drone rules if it wants to avoid punishing fliers who merely want to share their adventures with others.