Yahoo sucks for the part, where i living. I'm spending some of my time to walk, cycle and drive with my Freerunner to draw my city. I thought about buying some aerial photos [1], but I don't know if there are some legal issues for making the beautiful map of my city. Of course, I have mailed to them and asked: Can I make maps from your photos? - they said: "Yes". Okay. That is one side of the medal. If someone ask me - how do you made this map (where's source?), must I show him the source?

[1] http://www.geoserwer.pl/