No one likes a one way relationship, and how can you really engage in social media without people to engage with? As you build your follow list and get follow backs, it is important to regularly review your followers to see if you are leaving anyone out.
Here is a link of how to find your followers to follow them back on Instagram.
Here is a list of everything you need to know about followers on Twitter.
Pinterest gives you the details here.
Feel free to google “how to find my followers on (other social media platform) if I left any out!