gtkaddpoi is a simple gtk interface for search an address and add as POI on TangoGPS.
You can download ipk fils from following link
http://projects.openmoko.org/frs/download.php/472/gtkaddpoi_0.4a_all.opk
opkg install http://projects.openmoko.org/frs/download.php/472/gtkaddpoi_0.4a_all.opk