If you are here you are probably suspicious about the number of followers someone has, and where they may have got them from. Social media is a way to make money by being paid for posts that advertise something or by receiving gifts, event invites or other benefits. The price you command for your posts is based on your social reach. How many eyballs will see the post and what is that worth to the advertiser. Someone with more than 10 million instagram followers can earn more than USD $10k per post! Now you realise why celebs are often slipping their latest "can't live without" product into their feed!
So a way to increase your social reach is to buy instagram followers. There are numerous companies that can supply your account with robot followers or human followers. But the thing with these types of followers is they don't really interact with your posts once they've followed you. Unless of course you opted for a package that included some paid likes. To check if an account has possibly paid for follower that aren't organically gathered we can analyse their account and their 20 most recent posts to see how engaged their follower are. This is the level of social engagement, which is more important than the social reach. If the resulting ratios for likes and comments based on the number of follower is outside the industry standard, it is likely that the account has paid instagram followers.
Another reason someone might have non engaged followers is because they are bots. Instagram Bots are script driven accounts that are used for various reasons. To hide their computer heart and to make them seem more human they post random comments and follow random people to hide their true purpose. Their real purpose might be for when their master instructs them to follow someone, like a comment or spam people to advertise something.
Note: Some accounts will typically have a lower level of social engagement than industry standard for legitimate reasons. . So don't grab the pitchfork just yet! Also, someone may not have bought their fake followers, they might just be a bot magnet!