geospatial documentation modules mapping geocode

I'm interested in discussing various setups and techniques for exploring large sets of geodata on the web. For starters, I imported the entire dataset of US postal codes into Drupal (as nodes) to see what limitations I could find using the OpenLayers module. The OpenLayers module uses the Views module to assemble datasets and output them to a user's browser where it is then rendered using the OpenLayers javascript mapping library.