Well, seems like this module has been abandoned and it does seem a shame ...
I'm trying to geocode suburbs within Melbourne Australia. These seems to be failing because they exist outside the Geotaxonomy Map Preset bounding box.
So, I guess to be able to better accommodate South-Eastern Australia would be great. In other words, the default Geotaxonomy Map Preset should be configurable by the site admin (unless I missed somthing).
Perhaps, as illustrative of my requirement, please review this code in geotaxonomy.module that I have hacked:
function geotaxonomy_openlayers_presets() {
// Create full preset array
$default = new stdClass();
$default->api_version = 1;
$default->name = 'geotaxonomy_map_stew';
$default->title = t('Geotaxonomy Map');
$default->description = t('A Map Used for Geotaxonomy Input');
$default->data = array(
'projection' => '900913',
'width' => '600px',
'default_layer' => 'google_normal',
'height' => '400px',
'center' => array(
'initial' => array(
'centerpoint' => '142,-36',
'zoom' => '9'
)