For a commercial or business account on instagram, this algorithm can be used to find the target audience group for marketing by analyzing demographics of followers such as- age, location, gender and associating them with the number of likes.
Instagram viewer sites are third-party websites that allow users to view and download Instagram content without using the Instagram app. Some of these sites like https://mollygram.com offer additional features like searching for content and analytics, it's important to be cautious when using them and to ensure sharing or using their services.