I suppose I should have seen this coming. Today, flickr added its own geotagging and photo mapping tool, using the Yahoo Maps API. It's a nice tool; they've made it quite easy to add location to the attribute data for ones photos.
I think this will replace, for me, the loc.aliz.us tool that I mentioned last week. It is simply more integrated into flickr. I was able to quickly import the geotags that I had individually added to some of my photos and easily add more photos to my flickr map.