A social site currently based on django 1.0 and the pinax skeleton.
Is part of an startup based on barcelona and is collecting entertainment events for everybody living on the supported cities, right now are Barcelona and Madrid (more than 8000 events globally).
One of the main killer features are the recommender, which based on your votes, friends and activity tries to give you interesting events, based on AI algorithms like content based filtering.
we are using some of the collest django plugables out there, like threaded comments, django-command-extensions, photologue, django tagging (1.0), etc. as well as own developed plugables (and shared as opensource):
- A head map for google maps: http://robertrv.wordpress.com/2009/03/11/heat-maps-with-django/
- the main recommender engine: http://bcurtu.com/?p=485