Swapsort is a simple sorting algorithm based on the concept of repeatedly swapping adjacent elements to sort a list. It operates by comparing pairs of adjacent elements and swapping them if they are in the wrong order, continuing this process until the entire list is sorted. While easy to understand and implement, swapsort is inefficient for large datasets, with a time complexity of O(n^2) in the worst case. It is not commonly used in practice due to its poor performance compared to more efficient algorithms like quicksort or mergesort.