With the My Maps feature in Google Maps, you can mark locations, paths, and regions of interest on a personalized map, and share it with the world!
You can even add descriptive text, embed photos and videos, and view your map on Google Earth.
Check it out: http://www.youtube.com/watch?v=TftFnot5uXw or http://earth.google.com/outreach/tutorial_mymaps.html
Use this api to embed in Flash: http://code.google.com/apis/maps/documentation/flash/
