When a website is ranking below 200,000 on Alexa and the Audience Demographics graphic is all empty with no information about the visitors what could be the reason for this? Could it be crawlers traffic or fake visits?
What it does mean is that the Alexa Rank being shown is either wrong or useless. The site must be fairly new with very low traffic. At low traffic, Alexa has doesn't have many data points (based on tool bar installations) and hence data tends to be off.