For a genealogist, it could be very useful if you wanted to look at migrations or locations, and wanted to associate files with a certain geographic location. As far as maps, you can use your own, maps off the internet, an exported map (such as Route 66), historical maps, etc.
Requires: Mac OS X 10.3+
Changes:
* Universal Application and also runs on Intel-Macs in native mode.
* MapMemo files can now be browsed by Apple’s Spotlight search.
* There are new layer-functionalities and also some bug-fixes.