Hi Kevin,
Great idea and it is very nearly working on my phone.
On Android 2.2 (HTC Desire) i forwarded one of my buddies previous SPOT landing SMSs to myself and GeoSMS picked up the new arrival and notified me.
The steps going into the app are
1) TRY/DONATE screen
2) map screen showing flashing blue icon but no background map. This is on wifi at home but i tried outside with gps signal and similar result
3) If i short press on the icon for my buddy in the middle of the map screen i get a tool tip with the correct lat/lon/name for my friend.
4) if i long press i get a "navigate to" which works and the map comes up correctly in the android navigate screens with the correct lat/lon target coords - i can zoom and out and verify the map location roughly using this method although not so good for off road locations. This makes the app usable for me
So it looks to me as if there is a hang up in step 2) where it spends ages trying get a gps fix before displaying the map? Or some other hang up to do with map display? I tried both types of map (street and satellite, same result). Perhaps it tries to find your own gps position first because app is getting ready to send OUT a GeoSMS?
Update to Android 2.3 now available so will try that and see if it works better there...
Bren