I'm glad you like it .
I had exactly the same problem when I started writing the app, so I modified Map This! itself to also read routes from /PSP/COMMON. A while later, Deniska put this in the official version of Map This! also, so since v0.5 (I think), in every map you can load POI files from /PSP/COMMON.
Not only is this handy to have global POI files (e.g., all restaurants for all areas in one file), but also for the PSP browser, which insists on saving in a few directories only.
So in short, just save it in /PSP/COMMON, and you can load it in any map you want.
Btw., this is also (sorta) explained here: http://en.wikibooks.org/wiki/Map_Thi...ting_POI_files