Have a little time on your hands? Wish you could see where your ancestors lived, fit old maps to the present and see what the land looks like now?
An interesting webinar is available titles ‘Google Earth for Genealogists. Go to http://www.rootsmagic.com/webinars and prepare to be amazed.
Sun City Vistoso Genealogical Society 
Webinar on Earth.google.com suffers severely from verbosity. I fell asleep, woke up for a while, fell asleep again and when I woke up again it was still playing! It could be reduced to one third its length to more efficiently accomplish its task.