API proposal:

GET_EVENTS_FOR_POSITION:
@latitude: the latitude for this location
@longitude: the longitude for this location
@altitude: the altitude for this location
@precision: the acceptable offset from the location

returns: a list of event IDs within the area formed by the coordinates and
the accepted offset from the point.


GET_EVENTS_FOR_ADDRESS:
@address: dictionary with address fields

Possible fields for the address dictionary are countrycode, country, region,
locality, area, postalcode and street

returns: a list of event IDs associated with this address


GET_POSITION_FOR_EVENT:
@event: an event ID

gets the positional data for an event ID. the data is returned as an array
with longitude, latitude, altitude and accuracy.
accuracy is an array of accuracy level, horizontal accuracy and vertical
accuracy

returns: position


GET_ADDRESS_FOR_EVENT:
@event: an event ID

gets the address for an event  ID. the data is returned as a dictionary with
address fields. available fields will be populated. unavailable fields are
undefined.
possible fields are: countrycode, country, region, locality, area, postalcode
and street

returns: dictionary with address data