Do you know about Keep Right?
It will help you find some errors ( like roads not connected) on the map.

http://keepright.ipax.at/report_map.php?lat=10.601&lon=122.9346&zoom=14

According to their website "Maps are updated approximately once per 1.5 months "

http://www.navmii.com/navfree/download.aspx

Nice work!

If it's splashed all over the building, how private is it anyway?