The current version (1.1RC) of Google App Engine Patch does not allow for easy ordering of forms in formsets. Normally, Django obeys a model’s Meta.ordering property as the default for formset data. However, Google App Engine Patch fetches unordered data by default.
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Just released HiveMaps. An open source JavaScript framework for Google Maps that makes it super easy to put thousands of data points on a map. HiveMaps supports client-side marker clustering, back button, dynamic marker lists, geocoding, embedding, and smart handling of overlapping markers.
HiveMaps currently uses an improved version of MarkerClusterer available in the source code repo.