Cool stuff - maps!
Ever wanted to update a map you know is wrong?
Google maps is nice, but not every trail you know about shows up on it and you can't update it. Want to add a trail or an unmapped road? No luck ... but this new toy may be a good alternative.
Have a look, MTB riders ... www.openstreetmap.org
It looks like it has a lot of potential - the singletrack by the Yarra, Sonn Berg Drive (Hurt Hill) etc ... Now you have your chance to update maps.