In response to your query I would only suggest including Forbes com blog figures beyond their current footnoted status in the event that they can be cross referenced with reliable hard data and hence triple sourced as good and ethical journalistic practices would dictate If a second source of reliable financial hard data could be found to substantiate the 8 5 billion meaning financial data not simply a rehashing or referencing of the Forbes com blog post itself then I can t see why it wouldn t be duly considered Until then however the article seems fair and balanced as is