Leafy's map shows some of the locations that appear in Goiky. It first appeared in "The Glistening", when Leafy uses it to teleport to Yoyleland. It appeared again in "Yeah, Who? I Wanna Know", when it flew into Leafy's face, and she used to teleport to Yoyleland again. It was then torn apart into small pieces by Pin.
The line said to use the map, "Blue skidoo, we can too!", is a reference to the children's TV series, Blue's Clues. It's the same line that Steve says before he jumps into a painting. Even the sound effect is similar.
Leafy's map doesn't automatically update, as Dream Island is still on the map in BFDIA 1 after it was purchased by Leafy.
On the map, Dream Island appears to be larger than it is in reality, as it is one square mile in size, but Yoyleland is 2,763 miles away.
It is shown in BFDIA 5d that the body of water that the FreeSmarters were in was the Goiky Canal, despite it being very far from Yoyleland on Leafy's Map, hinting that either Yoyle City may be separated from Yoyleland or that the map is inaccurate.