The smallest island

The smallest island in the world - according to the Guiness Book of Records - is Bishop Rock. It lies at the most south-westerly part of the United Kingdom. It is one of 1040 islands around Britain and only has a lighthouse on it. In 1861, the British government set out the parameters for classifying an island. It was decided that if it was inhabited, the size was immaterial. However, if it was uninhabited, it had to be "the summer's pasturage of at least one sheep" - which is about two acres.
Going by the above parameters, most of the 179 584 "islands" around Finland and the almost 200 000 around Canada would not match Indonesia as the country with the most islands. In fact, Indonesia consists only of islands - 13 667 of them, 6000 of which are inhabited.