What are stories? They are short photos or videos that people post on Instagram. They last only 24 hours and then disappear. In other words, it's a fleeting format to share moments from life or interesting things that you don't always want to leave on your page forever.
Now, about the spelling. Many people wonder: stories or storis? In the Ukrainian language, both options occur, but “storis” is used more often. Probably because it sounds closer to the original English “stories.” So, the spelling of storis seems to have been more firmly established with the letter “s” at the end.
Why are they so popular? It's simple: stories are an opportunity to be in constant contact with your followers, to share moments that are happening here and now, and not overload your main feed. For example, you can share how you enjoyed coffee with friends yesterday, impressions from a movie, or just a funny cat on the street — and all of this will be seen by your followers without extra effort on your part. It's like an online life in real-time.