I've written before about all the wonderful and free GIS data available online. Well, I came across a great new blog the other day, the Free GIS Data GeoBlog. Much of this information is available in other places, such as this excellent resource. Still, the Free GIS Data GeoBlog looks promising. I am especially excited by the fact that they are posting international data. And remember, if you aren't a GIS professional with access to ArcView, OziExplorer is a great package that allows you to use your GPS and use GIS data.