High Earth Orbit explains how to do geographic queries with Leopard. Two things come in handy for this: 1. Spotlight stores information about lat/long in kMDItemLatitude and kMDItemLongitude. 2. With the appropriate Query Expression Syntax you can use the > and < operators to search for ranges. GeoSpotlight allows you to search without a box and add other Spotlight predicates to search by, say, keyword, title, city, time, etc.
Vivalogo publishes a list of the Top 40 Free, Downloadable Open Source Social Networking Software Applications. On the list is Elgg, which seems to have matured and might be interesting to revisit as it seems to be strong on supporting user communities.
OSGeo is announces that the GRASS, together with GDAL and FDO projects has graduated from the incubation process and is now a full fledged
OSGeo project. From the announcement:
Graduating incubation includes requirements for open community operation, a responsible project governance model, code provenance and license verification and general good project operation. Graduating incubation is the OSGeo seal of approval for a project and gives potential users of the project added confidence in the viability and safety of the project.
