Native Ads wants their advertisers to be as successful as possible and have their campaigns generate optimal traffic! In order to accomplish this, Native Ads uses a series of algorithms to determine which sites ads appear on.
For initial ad placements, Native Ads uses the categories initially specified in the campaign creation process. The metadata from the landing page is used as well as internal algorithms which specifically determine which websites the content is expected to perform best on.
Feel free to contact Native Ads support with any questions or concerns about where your ads will appear and a Native Ads rep will be in touch shortly!