Google and Yahoo is the same 4-5 year old map for my area (I think it is hit or miss on what is updated
and when). Believe it or not, the aerial on Mapquest was good and from last year. The only problem
is it is harder to work with (save, zoom) than Google. I loved the Mapquest map, but couldn't find
the source map online. I'm hoping Google or Yahoo update to that source map.