Awesome (free!) resource
I'm back from the NITLE conference Managing and Supporting GIS, and there is one tool in particular that I'm excited to share. BatchGeocode is a free, web-based tool that will take a list of addresses and provide latitude and longitude coordinates that may be imported into ArcGIS, Google Earth, Google Maps, and other mapping software to easily map them.
What is geocoding? Simply, this is when either a person or a program takes an address and assigns latitude and longitude coordinates so that the address may be displayed accurately on a map. This allows you to plot multiple addresses on one map.
Can't get enough? There's even a blog so you can keep up to date with all things BatchGeocode!