What is OpenStreetMap? How can you use OpenStreetMap?

Learn how to use OpenStreetMap and contribute to OpenStreetMap, and find out why OpenStreetMap data can be very useful. We'll be looking at OpenStreetMap and web mapping, talk about ways to contribute to the wonderful world of free and open map data, and also share in some Hallowe'en candy! People from all backgrounds are welcome to join us, and all skill levels from beginner to advanced are welcome.