There are many kinds of tags to keep track of. On Instagram, their primary function is to link out from a post to a Feed or to Stories, and to add an extra layer of information to the post.
Using a tag can help you reach your audience. Looking at what is published under a tag can help you to understand it.
WHICH HASHTAGS SHOULD YOU USE?
There is a whole science to this but in general we can say: Not too many. Not too commonplace. Not too rare. They should describe and be relevant to Swedish Radio, your account, your content and your audience.
Hashtags can be banned in some instances. #Kansas was used for too many posts, which breached Instagram’s rules and subsequently the tag was banned and it became impossible to do a search based on it.