New posts in Geography Data Type

Is PostGIS geography type EPSG:4326 only?

What is the purpose of PostGIS on PostgreSQL?

Using geometry rather than geography data types in SQL Server Spatial?

Performing bounding box query in PostGIS?

Change polygon "handedness" for SQL 2008 (reverse polygon vertex order)

PostGIS : Does the <-> operator work for Geography?

Converting from Geography to Geometry data type in PostGIS?

What are the pros and cons of PostGIS geography and geometry types?