geocoding

[eluser]NotDior[/eluser]
Reading through this post might help shed some light. http://ellislab.com/forums/viewthread/221327/

There is one link in there that goes into how to do searching stuff with GeoCodes and such (thru mysql).

If you actually have the number of users you say you'll have you'll quickly run into Google's Geocoding limit (2,500 requests a day I believe), so I'm thinking a database of postal codes/address's and lat/long is going to get you a lot further.

CD