SlideStory is an online tool designed for creating and sharing audio slideshows by allowing users to combine photos with voice narration, aiding in the improvement of speaking, listening, reading, and writing skills. The platform is free, supports MP3 audio creation, and is compatible with various Apple devices, but has limitations such as a maximum of 15 pictures per slideshow and the need for an additional program. Users can also share their creations on blogs, offering a fun way to enhance their storytelling abilities.