Yard Sale Treasure Game?

My mom is very interested on the yard sale treasure game. I heard about a Yard Sale Treasure map in Google Maps where you get a mashup designed to help you find Craigslist-posted yard sales in my area.
Like, you enter a starting address, a driving radius, and select from Friday, Saturday, or Sunday and the Yard Sale Treasure map then queries Craiglist for your area, and returns a route that will take you to all the yard sales it finds. It's google maps right, but how do I get the mashup?

You can also add in sales that you find from other sources, like your local paper, by either putting the address in the left sidebar or double clicking on the map to place a new marker. This surprisingly elegant hack is free to use.

Just visit this website to get the mashup on your location.

Yard Sale Treasure Game:
http://www.yardsaletreasuremap.com/

That treasure map looks really cool.